Home / 42,680.91-64,012.53-12,695.32

Finding the Fourth Proportional to 42,680.91, 64,012.53 and 12,695.32

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Solution

The fourth proportional to 42,680.91, 64,012.53 and 12,695.32 is: 19,040.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,680.91 : 64,012.53 = 12,695.32 : x
  2. Step 2: Convert to fraction form
    42,680.91/64,012.53 = 12,695.32/x
  3. Step 3: Cross multiply
    42,680.91x = 64,012.53 × 12,695.32
  4. Step 4: Simplify right side
    42,680.91x = 812,659,679.98
  5. Step 5: Solve for x
    x = 812,659,679.98/42,680.91
  6. Step 6: Final answer
    x = 19,040.35

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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.