Home / 21,288.52-29,378.20-12,337.74

Finding the Fourth Proportional to 21,288.52, 29,378.20 and 12,337.74

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Solution

The fourth proportional to 21,288.52, 29,378.20 and 12,337.74 is: 17,026.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.52 : 29,378.20 = 12,337.74 : x
  2. Step 2: Convert to fraction form
    21,288.52/29,378.20 = 12,337.74/x
  3. Step 3: Cross multiply
    21,288.52x = 29,378.20 × 12,337.74
  4. Step 4: Simplify right side
    21,288.52x = 362,460,593.27
  5. Step 5: Solve for x
    x = 362,460,593.27/21,288.52
  6. Step 6: Final answer
    x = 17,026.11

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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.