Home / 21,499.68-29,671.36-12,547.76

Finding the Fourth Proportional to 21,499.68, 29,671.36 and 12,547.76

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Solution

The fourth proportional to 21,499.68, 29,671.36 and 12,547.76 is: 17,316.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,499.68 : 29,671.36 = 12,547.76 : x
  2. Step 2: Convert to fraction form
    21,499.68/29,671.36 = 12,547.76/x
  3. Step 3: Cross multiply
    21,499.68x = 29,671.36 × 12,547.76
  4. Step 4: Simplify right side
    21,499.68x = 372,309,104.15
  5. Step 5: Solve for x
    x = 372,309,104.15/21,499.68
  6. Step 6: Final answer
    x = 17,316.96

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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.