Home / 10,425.42-15,529.55-9,871.38

Finding the Fourth Proportional to 10,425.42, 15,529.55 and 9,871.38

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Solution

The fourth proportional to 10,425.42, 15,529.55 and 9,871.38 is: 14,704.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,425.42 : 15,529.55 = 9,871.38 : x
  2. Step 2: Convert to fraction form
    10,425.42/15,529.55 = 9,871.38/x
  3. Step 3: Cross multiply
    10,425.42x = 15,529.55 × 9,871.38
  4. Step 4: Simplify right side
    10,425.42x = 153,298,039.92
  5. Step 5: Solve for x
    x = 153,298,039.92/10,425.42
  6. Step 6: Final answer
    x = 14,704.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.