Home / 38,681.68-58,013.07-12,380.98

Finding the Fourth Proportional to 38,681.68, 58,013.07 and 12,380.98

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Solution

The fourth proportional to 38,681.68, 58,013.07 and 12,380.98 is: 18,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,681.68 : 58,013.07 = 12,380.98 : x
  2. Step 2: Convert to fraction form
    38,681.68/58,013.07 = 12,380.98/x
  3. Step 3: Cross multiply
    38,681.68x = 58,013.07 × 12,380.98
  4. Step 4: Simplify right side
    38,681.68x = 718,258,659.41
  5. Step 5: Solve for x
    x = 718,258,659.41/38,681.68
  6. Step 6: Final answer
    x = 18,568.45

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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.