Home / 31,442.80-47,164.20-10,666.48

Finding the Fourth Proportional to 31,442.80, 47,164.20 and 10,666.48

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Solution

The fourth proportional to 31,442.80, 47,164.20 and 10,666.48 is: 15,999.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,442.80 : 47,164.20 = 10,666.48 : x
  2. Step 2: Convert to fraction form
    31,442.80/47,164.20 = 10,666.48/x
  3. Step 3: Cross multiply
    31,442.80x = 47,164.20 × 10,666.48
  4. Step 4: Simplify right side
    31,442.80x = 503,075,996.02
  5. Step 5: Solve for x
    x = 503,075,996.02/31,442.80
  6. Step 6: Final answer
    x = 15,999.72

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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.