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Finding the Fourth Proportional to 28,607.80, 42,916.67 and 9,630.63

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Solution

The fourth proportional to 28,607.80, 42,916.67 and 9,630.63 is: 14,447.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,607.80 : 42,916.67 = 9,630.63 : x
  2. Step 2: Convert to fraction form
    28,607.80/42,916.67 = 9,630.63/x
  3. Step 3: Cross multiply
    28,607.80x = 42,916.67 × 9,630.63
  4. Step 4: Simplify right side
    28,607.80x = 413,314,569.60
  5. Step 5: Solve for x
    x = 413,314,569.60/28,607.80
  6. Step 6: Final answer
    x = 14,447.62

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1.5x scale

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.