Home / 15,281.39-21,092.81-9,977.02

Finding the Fourth Proportional to 15,281.39, 21,092.81 and 9,977.02

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Solution

The fourth proportional to 15,281.39, 21,092.81 and 9,977.02 is: 13,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.39 : 21,092.81 = 9,977.02 : x
  2. Step 2: Convert to fraction form
    15,281.39/21,092.81 = 9,977.02/x
  3. Step 3: Cross multiply
    15,281.39x = 21,092.81 × 9,977.02
  4. Step 4: Simplify right side
    15,281.39x = 210,443,284.61
  5. Step 5: Solve for x
    x = 210,443,284.61/15,281.39
  6. Step 6: Final answer
    x = 13,771.21

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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.