Home / 21,217.80-29,281.10-11,657.93

Finding the Fourth Proportional to 21,217.80, 29,281.10 and 11,657.93

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Solution

The fourth proportional to 21,217.80, 29,281.10 and 11,657.93 is: 16,088.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.80 : 29,281.10 = 11,657.93 : x
  2. Step 2: Convert to fraction form
    21,217.80/29,281.10 = 11,657.93/x
  3. Step 3: Cross multiply
    21,217.80x = 29,281.10 × 11,657.93
  4. Step 4: Simplify right side
    21,217.80x = 341,356,809.43
  5. Step 5: Solve for x
    x = 341,356,809.43/21,217.80
  6. Step 6: Final answer
    x = 16,088.23

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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.