Home / 15,301.11-21,115.70-8,495.59

Finding the Fourth Proportional to 15,301.11, 21,115.70 and 8,495.59

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Solution

The fourth proportional to 15,301.11, 21,115.70 and 8,495.59 is: 11,724.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.11 : 21,115.70 = 8,495.59 : x
  2. Step 2: Convert to fraction form
    15,301.11/21,115.70 = 8,495.59/x
  3. Step 3: Cross multiply
    15,301.11x = 21,115.70 × 8,495.59
  4. Step 4: Simplify right side
    15,301.11x = 179,390,329.76
  5. Step 5: Solve for x
    x = 179,390,329.76/15,301.11
  6. Step 6: Final answer
    x = 11,724.01

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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.