Home / 21,002.64-28,983.20-11,442.16

Finding the Fourth Proportional to 21,002.64, 28,983.20 and 11,442.16

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Solution

The fourth proportional to 21,002.64, 28,983.20 and 11,442.16 is: 15,789.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.64 : 28,983.20 = 11,442.16 : x
  2. Step 2: Convert to fraction form
    21,002.64/28,983.20 = 11,442.16/x
  3. Step 3: Cross multiply
    21,002.64x = 28,983.20 × 11,442.16
  4. Step 4: Simplify right side
    21,002.64x = 331,630,411.71
  5. Step 5: Solve for x
    x = 331,630,411.71/21,002.64
  6. Step 6: Final answer
    x = 15,789.94

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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.