Home / 31,527.32-43,525.50-20,931.44

Finding the Fourth Proportional to 31,527.32, 43,525.50 and 20,931.44

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Solution

The fourth proportional to 31,527.32, 43,525.50 and 20,931.44 is: 28,897.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,527.32 : 43,525.50 = 20,931.44 : x
  2. Step 2: Convert to fraction form
    31,527.32/43,525.50 = 20,931.44/x
  3. Step 3: Cross multiply
    31,527.32x = 43,525.50 × 20,931.44
  4. Step 4: Simplify right side
    31,527.32x = 911,051,391.72
  5. Step 5: Solve for x
    x = 911,051,391.72/31,527.32
  6. Step 6: Final answer
    x = 28,897.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.