Home / 38,678.04-58,019.76-12,384.90

Finding the Fourth Proportional to 38,678.04, 58,019.76 and 12,384.90

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Solution

The fourth proportional to 38,678.04, 58,019.76 and 12,384.90 is: 18,578.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,678.04 : 58,019.76 = 12,384.90 : x
  2. Step 2: Convert to fraction form
    38,678.04/58,019.76 = 12,384.90/x
  3. Step 3: Cross multiply
    38,678.04x = 58,019.76 × 12,384.90
  4. Step 4: Simplify right side
    38,678.04x = 718,568,925.62
  5. Step 5: Solve for x
    x = 718,568,925.62/38,678.04
  6. Step 6: Final answer
    x = 18,578.21

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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.