Home / 28,931.28-43,400.40-10,207.45

Finding the Fourth Proportional to 28,931.28, 43,400.40 and 10,207.45

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Solution

The fourth proportional to 28,931.28, 43,400.40 and 10,207.45 is: 15,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.28 : 43,400.40 = 10,207.45 : x
  2. Step 2: Convert to fraction form
    28,931.28/43,400.40 = 10,207.45/x
  3. Step 3: Cross multiply
    28,931.28x = 43,400.40 × 10,207.45
  4. Step 4: Simplify right side
    28,931.28x = 443,007,457.66
  5. Step 5: Solve for x
    x = 443,007,457.66/28,931.28
  6. Step 6: Final answer
    x = 15,312.40

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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.