Home / 28,113.72-42,184.32-12,316.59

Finding the Fourth Proportional to 28,113.72, 42,184.32 and 12,316.59

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Solution

The fourth proportional to 28,113.72, 42,184.32 and 12,316.59 is: 18,480.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.72 : 42,184.32 = 12,316.59 : x
  2. Step 2: Convert to fraction form
    28,113.72/42,184.32 = 12,316.59/x
  3. Step 3: Cross multiply
    28,113.72x = 42,184.32 × 12,316.59
  4. Step 4: Simplify right side
    28,113.72x = 519,566,927.68
  5. Step 5: Solve for x
    x = 519,566,927.68/28,113.72
  6. Step 6: Final answer
    x = 18,480.91

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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.