Home / 28,721.28-43,088.94-9,998.64

Finding the Fourth Proportional to 28,721.28, 43,088.94 and 9,998.64

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Solution

The fourth proportional to 28,721.28, 43,088.94 and 9,998.64 is: 15,000.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.28 : 43,088.94 = 9,998.64 : x
  2. Step 2: Convert to fraction form
    28,721.28/43,088.94 = 9,998.64/x
  3. Step 3: Cross multiply
    28,721.28x = 43,088.94 × 9,998.64
  4. Step 4: Simplify right side
    28,721.28x = 430,830,799.04
  5. Step 5: Solve for x
    x = 430,830,799.04/28,721.28
  6. Step 6: Final answer
    x = 15,000.40

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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.