Home / 20,430,468.40-28,194,238.77-11,263,439.20

Finding the Fourth Proportional to 20,430,468.40, 28,194,238.77 and 11,263,439.20

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Solution

The fourth proportional to 20,430,468.40, 28,194,238.77 and 11,263,439.20 is: 15,543,652.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430,468.40 : 28,194,238.77 = 11,263,439.20 : x
  2. Step 2: Convert to fraction form
    20,430,468.40/28,194,238.77 = 11,263,439.20/x
  3. Step 3: Cross multiply
    20,430,468.40x = 28,194,238.77 × 11,263,439.20
  4. Step 4: Simplify right side
    20,430,468.40x = 317,564,094,176,177.75
  5. Step 5: Solve for x
    x = 317,564,094,176,177.75/20,430,468.40
  6. Step 6: Final answer
    x = 15,543,652.16

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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.