Home / 28,931.60-43,397.40-9,212.15

Finding the Fourth Proportional to 28,931.60, 43,397.40 and 9,212.15

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Solution

The fourth proportional to 28,931.60, 43,397.40 and 9,212.15 is: 13,818.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.60 : 43,397.40 = 9,212.15 : x
  2. Step 2: Convert to fraction form
    28,931.60/43,397.40 = 9,212.15/x
  3. Step 3: Cross multiply
    28,931.60x = 43,397.40 × 9,212.15
  4. Step 4: Simplify right side
    28,931.60x = 399,783,358.41
  5. Step 5: Solve for x
    x = 399,783,358.41/28,931.60
  6. Step 6: Final answer
    x = 13,818.23

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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.