Home / 12,128,329.20-18,192,493.80-11,650,032.30

Finding the Fourth Proportional to 12,128,329.20, 18,192,493.80 and 11,650,032.30

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Solution

The fourth proportional to 12,128,329.20, 18,192,493.80 and 11,650,032.30 is: 17,475,048.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,329.20 : 18,192,493.80 = 11,650,032.30 : x
  2. Step 2: Convert to fraction form
    12,128,329.20/18,192,493.80 = 11,650,032.30/x
  3. Step 3: Cross multiply
    12,128,329.20x = 18,192,493.80 × 11,650,032.30
  4. Step 4: Simplify right side
    12,128,329.20x = 211,943,140,387,549.75
  5. Step 5: Solve for x
    x = 211,943,140,387,549.75/12,128,329.20
  6. Step 6: Final answer
    x = 17,475,048.45

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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.