Home / 15,609.13-21,541.11-8,535.55

Finding the Fourth Proportional to 15,609.13, 21,541.11 and 8,535.55

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Solution

The fourth proportional to 15,609.13, 21,541.11 and 8,535.55 is: 11,779.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,609.13 : 21,541.11 = 8,535.55 : x
  2. Step 2: Convert to fraction form
    15,609.13/21,541.11 = 8,535.55/x
  3. Step 3: Cross multiply
    15,609.13x = 21,541.11 × 8,535.55
  4. Step 4: Simplify right side
    15,609.13x = 183,865,224.00
  5. Step 5: Solve for x
    x = 183,865,224.00/15,609.13
  6. Step 6: Final answer
    x = 11,779.34

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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.