Home / 47,747.28-71,615.46-12,689.64

Finding the Fourth Proportional to 47,747.28, 71,615.46 and 12,689.64

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Solution

The fourth proportional to 47,747.28, 71,615.46 and 12,689.64 is: 19,033.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,747.28 : 71,615.46 = 12,689.64 : x
  2. Step 2: Convert to fraction form
    47,747.28/71,615.46 = 12,689.64/x
  3. Step 3: Cross multiply
    47,747.28x = 71,615.46 × 12,689.64
  4. Step 4: Simplify right side
    47,747.28x = 908,774,405.83
  5. Step 5: Solve for x
    x = 908,774,405.83/47,747.28
  6. Step 6: Final answer
    x = 19,033.01

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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.