Home / 30,488.29-45,731.05-12,711.62

Finding the Fourth Proportional to 30,488.29, 45,731.05 and 12,711.62

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Solution

The fourth proportional to 30,488.29, 45,731.05 and 12,711.62 is: 19,066.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,488.29 : 45,731.05 = 12,711.62 : x
  2. Step 2: Convert to fraction form
    30,488.29/45,731.05 = 12,711.62/x
  3. Step 3: Cross multiply
    30,488.29x = 45,731.05 × 12,711.62
  4. Step 4: Simplify right side
    30,488.29x = 581,315,729.80
  5. Step 5: Solve for x
    x = 581,315,729.80/30,488.29
  6. Step 6: Final answer
    x = 19,066.85

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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.