Home / 13,241.95-18,285.75-9,878.92

Finding the Fourth Proportional to 13,241.95, 18,285.75 and 9,878.92

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Solution

The fourth proportional to 13,241.95, 18,285.75 and 9,878.92 is: 13,641.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,241.95 : 18,285.75 = 9,878.92 : x
  2. Step 2: Convert to fraction form
    13,241.95/18,285.75 = 9,878.92/x
  3. Step 3: Cross multiply
    13,241.95x = 18,285.75 × 9,878.92
  4. Step 4: Simplify right side
    13,241.95x = 180,643,461.39
  5. Step 5: Solve for x
    x = 180,643,461.39/13,241.95
  6. Step 6: Final answer
    x = 13,641.76

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Half scale
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Double scale
Find fourth proportional to 13,242.95, 18,287.13 and 9,879.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.