Home / 15,518.16-21,422.04-9,932.40

Finding the Fourth Proportional to 15,518.16, 21,422.04 and 9,932.40

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Solution

The fourth proportional to 15,518.16, 21,422.04 and 9,932.40 is: 13,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.16 : 21,422.04 = 9,932.40 : x
  2. Step 2: Convert to fraction form
    15,518.16/21,422.04 = 9,932.40/x
  3. Step 3: Cross multiply
    15,518.16x = 21,422.04 × 9,932.40
  4. Step 4: Simplify right side
    15,518.16x = 212,772,270.10
  5. Step 5: Solve for x
    x = 212,772,270.10/15,518.16
  6. Step 6: Final answer
    x = 13,711.18

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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.