Home / 15,342.03-21,171.69-8,535.90

Finding the Fourth Proportional to 15,342.03, 21,171.69 and 8,535.90

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Solution

The fourth proportional to 15,342.03, 21,171.69 and 8,535.90 is: 11,779.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.03 : 21,171.69 = 8,535.90 : x
  2. Step 2: Convert to fraction form
    15,342.03/21,171.69 = 8,535.90/x
  3. Step 3: Cross multiply
    15,342.03x = 21,171.69 × 8,535.90
  4. Step 4: Simplify right side
    15,342.03x = 180,719,428.67
  5. Step 5: Solve for x
    x = 180,719,428.67/15,342.03
  6. Step 6: Final answer
    x = 11,779.37

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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.