Home / 19,138.77-28,714.23-9,781.29

Finding the Fourth Proportional to 19,138.77, 28,714.23 and 9,781.29

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Solution

The fourth proportional to 19,138.77, 28,714.23 and 9,781.29 is: 14,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.77 : 28,714.23 = 9,781.29 : x
  2. Step 2: Convert to fraction form
    19,138.77/28,714.23 = 9,781.29/x
  3. Step 3: Cross multiply
    19,138.77x = 28,714.23 × 9,781.29
  4. Step 4: Simplify right side
    19,138.77x = 280,862,210.76
  5. Step 5: Solve for x
    x = 280,862,210.76/19,138.77
  6. Step 6: Final answer
    x = 14,675.04

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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.