Home / 42,478.56-63,717.92-11,313.76

Finding the Fourth Proportional to 42,478.56, 63,717.92 and 11,313.76

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Solution

The fourth proportional to 42,478.56, 63,717.92 and 11,313.76 is: 16,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,478.56 : 63,717.92 = 11,313.76 : x
  2. Step 2: Convert to fraction form
    42,478.56/63,717.92 = 11,313.76/x
  3. Step 3: Cross multiply
    42,478.56x = 63,717.92 × 11,313.76
  4. Step 4: Simplify right side
    42,478.56x = 720,889,254.58
  5. Step 5: Solve for x
    x = 720,889,254.58/42,478.56
  6. Step 6: Final answer
    x = 16,970.66

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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.