Home / 31,647.88-47,482.20-12,943.64

Finding the Fourth Proportional to 31,647.88, 47,482.20 and 12,943.64

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Solution

The fourth proportional to 31,647.88, 47,482.20 and 12,943.64 is: 19,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,647.88 : 47,482.20 = 12,943.64 : x
  2. Step 2: Convert to fraction form
    31,647.88/47,482.20 = 12,943.64/x
  3. Step 3: Cross multiply
    31,647.88x = 47,482.20 × 12,943.64
  4. Step 4: Simplify right side
    31,647.88x = 614,592,621.91
  5. Step 5: Solve for x
    x = 614,592,621.91/31,647.88
  6. Step 6: Final answer
    x = 19,419.71

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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.