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Finding the Fourth Proportional to 21,453.76, 32,124.88 and 14,810.76

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Solution

The fourth proportional to 21,453.76, 32,124.88 and 14,810.76 is: 22,177.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453.76 : 32,124.88 = 14,810.76 : x
  2. Step 2: Convert to fraction form
    21,453.76/32,124.88 = 14,810.76/x
  3. Step 3: Cross multiply
    21,453.76x = 32,124.88 × 14,810.76
  4. Step 4: Simplify right side
    21,453.76x = 475,793,887.71
  5. Step 5: Solve for x
    x = 475,793,887.71/21,453.76
  6. Step 6: Final answer
    x = 22,177.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.