Home / 15,116.69-20,860.13-8,402.08

Finding the Fourth Proportional to 15,116.69, 20,860.13 and 8,402.08

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Solution

The fourth proportional to 15,116.69, 20,860.13 and 8,402.08 is: 11,594.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.69 : 20,860.13 = 8,402.08 : x
  2. Step 2: Convert to fraction form
    15,116.69/20,860.13 = 8,402.08/x
  3. Step 3: Cross multiply
    15,116.69x = 20,860.13 × 8,402.08
  4. Step 4: Simplify right side
    15,116.69x = 175,268,386.91
  5. Step 5: Solve for x
    x = 175,268,386.91/15,116.69
  6. Step 6: Final answer
    x = 11,594.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.