Home / 38,721.46-58,089.75-12,424.18

Finding the Fourth Proportional to 38,721.46, 58,089.75 and 12,424.18

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Solution

The fourth proportional to 38,721.46, 58,089.75 and 12,424.18 is: 18,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,721.46 : 58,089.75 = 12,424.18 : x
  2. Step 2: Convert to fraction form
    38,721.46/58,089.75 = 12,424.18/x
  3. Step 3: Cross multiply
    38,721.46x = 58,089.75 × 12,424.18
  4. Step 4: Simplify right side
    38,721.46x = 721,717,510.16
  5. Step 5: Solve for x
    x = 721,717,510.16/38,721.46
  6. Step 6: Final answer
    x = 18,638.70

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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.