Home / 21,287.08-31,903.10-14,702.76

Finding the Fourth Proportional to 21,287.08, 31,903.10 and 14,702.76

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Solution

The fourth proportional to 21,287.08, 31,903.10 and 14,702.76 is: 22,035.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.08 : 31,903.10 = 14,702.76 : x
  2. Step 2: Convert to fraction form
    21,287.08/31,903.10 = 14,702.76/x
  3. Step 3: Cross multiply
    21,287.08x = 31,903.10 × 14,702.76
  4. Step 4: Simplify right side
    21,287.08x = 469,063,622.56
  5. Step 5: Solve for x
    x = 469,063,622.56/21,287.08
  6. Step 6: Final answer
    x = 22,035.13

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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.