Home / 12,111,154.56-18,146,167.20-7,308,752.40

Finding the Fourth Proportional to 12,111,154.56, 18,146,167.20 and 7,308,752.40

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Solution

The fourth proportional to 12,111,154.56, 18,146,167.20 and 7,308,752.40 is: 10,950,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111,154.56 : 18,146,167.20 = 7,308,752.40 : x
  2. Step 2: Convert to fraction form
    12,111,154.56/18,146,167.20 = 7,308,752.40/x
  3. Step 3: Cross multiply
    12,111,154.56x = 18,146,167.20 × 7,308,752.40
  4. Step 4: Simplify right side
    12,111,154.56x = 132,625,843,073,801.28
  5. Step 5: Solve for x
    x = 132,625,843,073,801.28/12,111,154.56
  6. Step 6: Final answer
    x = 10,950,718.40

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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.