Home / 28,931.20-43,396.80-10,458.88

Finding the Fourth Proportional to 28,931.20, 43,396.80 and 10,458.88

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Solution

The fourth proportional to 28,931.20, 43,396.80 and 10,458.88 is: 15,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.20 : 43,396.80 = 10,458.88 : x
  2. Step 2: Convert to fraction form
    28,931.20/43,396.80 = 10,458.88/x
  3. Step 3: Cross multiply
    28,931.20x = 43,396.80 × 10,458.88
  4. Step 4: Simplify right side
    28,931.20x = 453,881,923.58
  5. Step 5: Solve for x
    x = 453,881,923.58/28,931.20
  6. Step 6: Final answer
    x = 15,688.32

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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.