Home / 42,686.17-64,029.27-11,521.42

Finding the Fourth Proportional to 42,686.17, 64,029.27 and 11,521.42

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Solution

The fourth proportional to 42,686.17, 64,029.27 and 11,521.42 is: 17,282.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,686.17 : 64,029.27 = 11,521.42 : x
  2. Step 2: Convert to fraction form
    42,686.17/64,029.27 = 11,521.42/x
  3. Step 3: Cross multiply
    42,686.17x = 64,029.27 × 11,521.42
  4. Step 4: Simplify right side
    42,686.17x = 737,708,111.96
  5. Step 5: Solve for x
    x = 737,708,111.96/42,686.17
  6. Step 6: Final answer
    x = 17,282.13

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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.