Home / 31,439.06-47,158.64-10,380.27

Finding the Fourth Proportional to 31,439.06, 47,158.64 and 10,380.27

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Solution

The fourth proportional to 31,439.06, 47,158.64 and 10,380.27 is: 15,570.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,439.06 : 47,158.64 = 10,380.27 : x
  2. Step 2: Convert to fraction form
    31,439.06/47,158.64 = 10,380.27/x
  3. Step 3: Cross multiply
    31,439.06x = 47,158.64 × 10,380.27
  4. Step 4: Simplify right side
    31,439.06x = 489,519,364.13
  5. Step 5: Solve for x
    x = 489,519,364.13/31,439.06
  6. Step 6: Final answer
    x = 15,570.42

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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.