Home / 15,057.10-20,779.33-9,087.60

Finding the Fourth Proportional to 15,057.10, 20,779.33 and 9,087.60

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Solution

The fourth proportional to 15,057.10, 20,779.33 and 9,087.60 is: 12,541.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.10 : 20,779.33 = 9,087.60 : x
  2. Step 2: Convert to fraction form
    15,057.10/20,779.33 = 9,087.60/x
  3. Step 3: Cross multiply
    15,057.10x = 20,779.33 × 9,087.60
  4. Step 4: Simplify right side
    15,057.10x = 188,834,216.59
  5. Step 5: Solve for x
    x = 188,834,216.59/15,057.10
  6. Step 6: Final answer
    x = 12,541.21

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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.