Home / 21,409.08-29,572.76-16,434.76

Finding the Fourth Proportional to 21,409.08, 29,572.76 and 16,434.76

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Solution

The fourth proportional to 21,409.08, 29,572.76 and 16,434.76 is: 22,701.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.08 : 29,572.76 = 16,434.76 : x
  2. Step 2: Convert to fraction form
    21,409.08/29,572.76 = 16,434.76/x
  3. Step 3: Cross multiply
    21,409.08x = 29,572.76 × 16,434.76
  4. Step 4: Simplify right side
    21,409.08x = 486,021,213.14
  5. Step 5: Solve for x
    x = 486,021,213.14/21,409.08
  6. Step 6: Final answer
    x = 22,701.64

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Half scale
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Double scale
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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.