Home / 28,931.24-43,406.28-13,134.42

Finding the Fourth Proportional to 28,931.24, 43,406.28 and 13,134.42

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Solution

The fourth proportional to 28,931.24, 43,406.28 and 13,134.42 is: 19,705.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.24 : 43,406.28 = 13,134.42 : x
  2. Step 2: Convert to fraction form
    28,931.24/43,406.28 = 13,134.42/x
  3. Step 3: Cross multiply
    28,931.24x = 43,406.28 × 13,134.42
  4. Step 4: Simplify right side
    28,931.24x = 570,116,312.16
  5. Step 5: Solve for x
    x = 570,116,312.16/28,931.24
  6. Step 6: Final answer
    x = 19,705.90

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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.