Home / 42,685.17-64,027.77-11,520.42

Finding the Fourth Proportional to 42,685.17, 64,027.77 and 11,520.42

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Solution

The fourth proportional to 42,685.17, 64,027.77 and 11,520.42 is: 17,280.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,685.17 : 64,027.77 = 11,520.42 : x
  2. Step 2: Convert to fraction form
    42,685.17/64,027.77 = 11,520.42/x
  3. Step 3: Cross multiply
    42,685.17x = 64,027.77 × 11,520.42
  4. Step 4: Simplify right side
    42,685.17x = 737,626,802.06
  5. Step 5: Solve for x
    x = 737,626,802.06/42,685.17
  6. Step 6: Final answer
    x = 17,280.63

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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.