Home / 10,666.40-15,979.59-4,088.12

Finding the Fourth Proportional to 10,666.40, 15,979.59 and 4,088.12

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Solution

The fourth proportional to 10,666.40, 15,979.59 and 4,088.12 is: 6,124.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,666.40 : 15,979.59 = 4,088.12 : x
  2. Step 2: Convert to fraction form
    10,666.40/15,979.59 = 4,088.12/x
  3. Step 3: Cross multiply
    10,666.40x = 15,979.59 × 4,088.12
  4. Step 4: Simplify right side
    10,666.40x = 65,326,401.57
  5. Step 5: Solve for x
    x = 65,326,401.57/10,666.40
  6. Step 6: Final answer
    x = 6,124.51

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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.