Home / 42,818.91-64,228.77-19,127.66

Finding the Fourth Proportional to 42,818.91, 64,228.77 and 19,127.66

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Solution

The fourth proportional to 42,818.91, 64,228.77 and 19,127.66 is: 28,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,818.91 : 64,228.77 = 19,127.66 : x
  2. Step 2: Convert to fraction form
    42,818.91/64,228.77 = 19,127.66/x
  3. Step 3: Cross multiply
    42,818.91x = 64,228.77 × 19,127.66
  4. Step 4: Simplify right side
    42,818.91x = 1,228,545,753.63
  5. Step 5: Solve for x
    x = 1,228,545,753.63/42,818.91
  6. Step 6: Final answer
    x = 28,691.66

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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.