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Finding the Fourth Proportional to 15,844.04, 21,864.02 and 9,129.86

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Solution

The fourth proportional to 15,844.04, 21,864.02 and 9,129.86 is: 12,598.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,844.04 : 21,864.02 = 9,129.86 : x
  2. Step 2: Convert to fraction form
    15,844.04/21,864.02 = 9,129.86/x
  3. Step 3: Cross multiply
    15,844.04x = 21,864.02 × 9,129.86
  4. Step 4: Simplify right side
    15,844.04x = 199,615,441.64
  5. Step 5: Solve for x
    x = 199,615,441.64/15,844.04
  6. Step 6: Final answer
    x = 12,598.77

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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.