Home / 15,034.05-20,739.67-9,931.56

Finding the Fourth Proportional to 15,034.05, 20,739.67 and 9,931.56

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Solution

The fourth proportional to 15,034.05, 20,739.67 and 9,931.56 is: 13,700.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,034.05 : 20,739.67 = 9,931.56 : x
  2. Step 2: Convert to fraction form
    15,034.05/20,739.67 = 9,931.56/x
  3. Step 3: Cross multiply
    15,034.05x = 20,739.67 × 9,931.56
  4. Step 4: Simplify right side
    15,034.05x = 205,977,211.63
  5. Step 5: Solve for x
    x = 205,977,211.63/15,034.05
  6. Step 6: Final answer
    x = 13,700.72

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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.