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Finding the Fourth Proportional to 28,622.95, 42,941.75 and 8,901.68

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Solution

The fourth proportional to 28,622.95, 42,941.75 and 8,901.68 is: 13,354.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,622.95 : 42,941.75 = 8,901.68 : x
  2. Step 2: Convert to fraction form
    28,622.95/42,941.75 = 8,901.68/x
  3. Step 3: Cross multiply
    28,622.95x = 42,941.75 × 8,901.68
  4. Step 4: Simplify right side
    28,622.95x = 382,253,457.92
  5. Step 5: Solve for x
    x = 382,253,457.92/28,622.95
  6. Step 6: Final answer
    x = 13,354.79

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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.