Home / 42,717.60-64,085.20-14,639.76

Finding the Fourth Proportional to 42,717.60, 64,085.20 and 14,639.76

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Solution

The fourth proportional to 42,717.60, 64,085.20 and 14,639.76 is: 21,962.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,717.60 : 64,085.20 = 14,639.76 : x
  2. Step 2: Convert to fraction form
    42,717.60/64,085.20 = 14,639.76/x
  3. Step 3: Cross multiply
    42,717.60x = 64,085.20 × 14,639.76
  4. Step 4: Simplify right side
    42,717.60x = 938,191,947.55
  5. Step 5: Solve for x
    x = 938,191,947.55/42,717.60
  6. Step 6: Final answer
    x = 21,962.66

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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.