Home / 28,569.61-42,828.16-9,845.20

Finding the Fourth Proportional to 28,569.61, 42,828.16 and 9,845.20

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Solution

The fourth proportional to 28,569.61, 42,828.16 and 9,845.20 is: 14,758.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.61 : 42,828.16 = 9,845.20 : x
  2. Step 2: Convert to fraction form
    28,569.61/42,828.16 = 9,845.20/x
  3. Step 3: Cross multiply
    28,569.61x = 42,828.16 × 9,845.20
  4. Step 4: Simplify right side
    28,569.61x = 421,651,800.83
  5. Step 5: Solve for x
    x = 421,651,800.83/28,569.61
  6. Step 6: Final answer
    x = 14,758.75

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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.