Home / 20,545.25-28,352.36-11,113.81

Finding the Fourth Proportional to 20,545.25, 28,352.36 and 11,113.81

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Solution

The fourth proportional to 20,545.25, 28,352.36 and 11,113.81 is: 15,337.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.25 : 28,352.36 = 11,113.81 : x
  2. Step 2: Convert to fraction form
    20,545.25/28,352.36 = 11,113.81/x
  3. Step 3: Cross multiply
    20,545.25x = 28,352.36 × 11,113.81
  4. Step 4: Simplify right side
    20,545.25x = 315,102,699.00
  5. Step 5: Solve for x
    x = 315,102,699.00/20,545.25
  6. Step 6: Final answer
    x = 15,337.01

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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.