Home / 31,487.88-47,231.55-12,763.46

Finding the Fourth Proportional to 31,487.88, 47,231.55 and 12,763.46

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Solution

The fourth proportional to 31,487.88, 47,231.55 and 12,763.46 is: 19,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487.88 : 47,231.55 = 12,763.46 : x
  2. Step 2: Convert to fraction form
    31,487.88/47,231.55 = 12,763.46/x
  3. Step 3: Cross multiply
    31,487.88x = 47,231.55 × 12,763.46
  4. Step 4: Simplify right side
    31,487.88x = 602,838,117.24
  5. Step 5: Solve for x
    x = 602,838,117.24/31,487.88
  6. Step 6: Final answer
    x = 19,145.08

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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.