Home / 28,312.23-42,479.99-12,508.92

Finding the Fourth Proportional to 28,312.23, 42,479.99 and 12,508.92

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Solution

The fourth proportional to 28,312.23, 42,479.99 and 12,508.92 is: 18,768.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.23 : 42,479.99 = 12,508.92 : x
  2. Step 2: Convert to fraction form
    28,312.23/42,479.99 = 12,508.92/x
  3. Step 3: Cross multiply
    28,312.23x = 42,479.99 × 12,508.92
  4. Step 4: Simplify right side
    28,312.23x = 531,378,733.97
  5. Step 5: Solve for x
    x = 531,378,733.97/28,312.23
  6. Step 6: Final answer
    x = 18,768.52

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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.