Home / 12,635.01-18,931.50-7,689.69

Finding the Fourth Proportional to 12,635.01, 18,931.50 and 7,689.69

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Solution

The fourth proportional to 12,635.01, 18,931.50 and 7,689.69 is: 11,521.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,635.01 : 18,931.50 = 7,689.69 : x
  2. Step 2: Convert to fraction form
    12,635.01/18,931.50 = 7,689.69/x
  3. Step 3: Cross multiply
    12,635.01x = 18,931.50 × 7,689.69
  4. Step 4: Simplify right side
    12,635.01x = 145,577,366.24
  5. Step 5: Solve for x
    x = 145,577,366.24/12,635.01
  6. Step 6: Final answer
    x = 11,521.75

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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.