Home / 28,030.72-42,045.16-11,385.82

Finding the Fourth Proportional to 28,030.72, 42,045.16 and 11,385.82

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Solution

The fourth proportional to 28,030.72, 42,045.16 and 11,385.82 is: 17,078.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.72 : 42,045.16 = 11,385.82 : x
  2. Step 2: Convert to fraction form
    28,030.72/42,045.16 = 11,385.82/x
  3. Step 3: Cross multiply
    28,030.72x = 42,045.16 × 11,385.82
  4. Step 4: Simplify right side
    28,030.72x = 478,718,566.70
  5. Step 5: Solve for x
    x = 478,718,566.70/28,030.72
  6. Step 6: Final answer
    x = 17,078.36

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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.