Home / 28,360.78-42,541.16-11,702.50

Finding the Fourth Proportional to 28,360.78, 42,541.16 and 11,702.50

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Solution

The fourth proportional to 28,360.78, 42,541.16 and 11,702.50 is: 17,553.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,360.78 : 42,541.16 = 11,702.50 : x
  2. Step 2: Convert to fraction form
    28,360.78/42,541.16 = 11,702.50/x
  3. Step 3: Cross multiply
    28,360.78x = 42,541.16 × 11,702.50
  4. Step 4: Simplify right side
    28,360.78x = 497,837,760.03
  5. Step 5: Solve for x
    x = 497,837,760.03/28,360.78
  6. Step 6: Final answer
    x = 17,553.74

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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.