Home / 20,172,425.80-30,240,267.90-7,389,848.20

Finding the Fourth Proportional to 20,172,425.80, 30,240,267.90 and 7,389,848.20

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Solution

The fourth proportional to 20,172,425.80, 30,240,267.90 and 7,389,848.20 is: 11,078,042.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172,425.80 : 30,240,267.90 = 7,389,848.20 : x
  2. Step 2: Convert to fraction form
    20,172,425.80/30,240,267.90 = 7,389,848.20/x
  3. Step 3: Cross multiply
    20,172,425.80x = 30,240,267.90 × 7,389,848.20
  4. Step 4: Simplify right side
    20,172,425.80x = 223,470,989,308,332.78
  5. Step 5: Solve for x
    x = 223,470,989,308,332.78/20,172,425.80
  6. Step 6: Final answer
    x = 11,078,042.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.