Home / 15,331.04-21,158.40-9,366.20

Finding the Fourth Proportional to 15,331.04, 21,158.40 and 9,366.20

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Solution

The fourth proportional to 15,331.04, 21,158.40 and 9,366.20 is: 12,926.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.04 : 21,158.40 = 9,366.20 : x
  2. Step 2: Convert to fraction form
    15,331.04/21,158.40 = 9,366.20/x
  3. Step 3: Cross multiply
    15,331.04x = 21,158.40 × 9,366.20
  4. Step 4: Simplify right side
    15,331.04x = 198,173,806.08
  5. Step 5: Solve for x
    x = 198,173,806.08/15,331.04
  6. Step 6: Final answer
    x = 12,926.31

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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.