Home / 12,123,456.80-18,185,185.20-8,934,810.80

Finding the Fourth Proportional to 12,123,456.80, 18,185,185.20 and 8,934,810.80

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Solution

The fourth proportional to 12,123,456.80, 18,185,185.20 and 8,934,810.80 is: 13,402,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123,456.80 : 18,185,185.20 = 8,934,810.80 : x
  2. Step 2: Convert to fraction form
    12,123,456.80/18,185,185.20 = 8,934,810.80/x
  3. Step 3: Cross multiply
    12,123,456.80x = 18,185,185.20 × 8,934,810.80
  4. Step 4: Simplify right side
    12,123,456.80x = 162,481,189,124,960.16
  5. Step 5: Solve for x
    x = 162,481,189,124,960.16/12,123,456.80
  6. Step 6: Final answer
    x = 13,402,216.20

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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.