Home / 20,434.40-30,658.20-10,038.86

Finding the Fourth Proportional to 20,434.40, 30,658.20 and 10,038.86

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Solution

The fourth proportional to 20,434.40, 30,658.20 and 10,038.86 is: 15,061.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.40 : 30,658.20 = 10,038.86 : x
  2. Step 2: Convert to fraction form
    20,434.40/30,658.20 = 10,038.86/x
  3. Step 3: Cross multiply
    20,434.40x = 30,658.20 × 10,038.86
  4. Step 4: Simplify right side
    20,434.40x = 307,773,377.65
  5. Step 5: Solve for x
    x = 307,773,377.65/20,434.40
  6. Step 6: Final answer
    x = 15,061.53

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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.