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Finding the Fourth Proportional to 28,610.04, 42,916.95 and 9,891.89

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Solution

The fourth proportional to 28,610.04, 42,916.95 and 9,891.89 is: 14,838.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,610.04 : 42,916.95 = 9,891.89 : x
  2. Step 2: Convert to fraction form
    28,610.04/42,916.95 = 9,891.89/x
  3. Step 3: Cross multiply
    28,610.04x = 42,916.95 × 9,891.89
  4. Step 4: Simplify right side
    28,610.04x = 424,529,484.49
  5. Step 5: Solve for x
    x = 424,529,484.49/28,610.04
  6. Step 6: Final answer
    x = 14,838.48

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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.