Home / 15,437.60-21,304.95-9,390.20

Finding the Fourth Proportional to 15,437.60, 21,304.95 and 9,390.20

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Solution

The fourth proportional to 15,437.60, 21,304.95 and 9,390.20 is: 12,959.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,437.60 : 21,304.95 = 9,390.20 : x
  2. Step 2: Convert to fraction form
    15,437.60/21,304.95 = 9,390.20/x
  3. Step 3: Cross multiply
    15,437.60x = 21,304.95 × 9,390.20
  4. Step 4: Simplify right side
    15,437.60x = 200,057,741.49
  5. Step 5: Solve for x
    x = 200,057,741.49/15,437.60
  6. Step 6: Final answer
    x = 12,959.12

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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.