Home / 13,280.81-18,327.38-7,539.35

Finding the Fourth Proportional to 13,280.81, 18,327.38 and 7,539.35

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Solution

The fourth proportional to 13,280.81, 18,327.38 and 7,539.35 is: 10,404.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.81 : 18,327.38 = 7,539.35 : x
  2. Step 2: Convert to fraction form
    13,280.81/18,327.38 = 7,539.35/x
  3. Step 3: Cross multiply
    13,280.81x = 18,327.38 × 7,539.35
  4. Step 4: Simplify right side
    13,280.81x = 138,176,403.07
  5. Step 5: Solve for x
    x = 138,176,403.07/13,280.81
  6. Step 6: Final answer
    x = 10,404.22

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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.