Home / 20,530.70-28,332.40-11,099.27

Finding the Fourth Proportional to 20,530.70, 28,332.40 and 11,099.27

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Solution

The fourth proportional to 20,530.70, 28,332.40 and 11,099.27 is: 15,317.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.70 : 28,332.40 = 11,099.27 : x
  2. Step 2: Convert to fraction form
    20,530.70/28,332.40 = 11,099.27/x
  3. Step 3: Cross multiply
    20,530.70x = 28,332.40 × 11,099.27
  4. Step 4: Simplify right side
    20,530.70x = 314,468,957.35
  5. Step 5: Solve for x
    x = 314,468,957.35/20,530.70
  6. Step 6: Final answer
    x = 15,317.01

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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.