Home / 31,686.55-47,527.35-8,312.38

Finding the Fourth Proportional to 31,686.55, 47,527.35 and 8,312.38

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Solution

The fourth proportional to 31,686.55, 47,527.35 and 8,312.38 is: 12,467.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,686.55 : 47,527.35 = 8,312.38 : x
  2. Step 2: Convert to fraction form
    31,686.55/47,527.35 = 8,312.38/x
  3. Step 3: Cross multiply
    31,686.55x = 47,527.35 × 8,312.38
  4. Step 4: Simplify right side
    31,686.55x = 395,065,393.59
  5. Step 5: Solve for x
    x = 395,065,393.59/31,686.55
  6. Step 6: Final answer
    x = 12,467.92

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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.