Home / 12,111,148.56-18,146,158.20-7,308,746.40

Finding the Fourth Proportional to 12,111,148.56, 18,146,158.20 and 7,308,746.40

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Solution

The fourth proportional to 12,111,148.56, 18,146,158.20 and 7,308,746.40 is: 10,950,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111,148.56 : 18,146,158.20 = 7,308,746.40 : x
  2. Step 2: Convert to fraction form
    12,111,148.56/18,146,158.20 = 7,308,746.40/x
  3. Step 3: Cross multiply
    12,111,148.56x = 18,146,158.20 × 7,308,746.40
  4. Step 4: Simplify right side
    12,111,148.56x = 132,625,668,418,080.48
  5. Step 5: Solve for x
    x = 132,625,668,418,080.48/12,111,148.56
  6. Step 6: Final answer
    x = 10,950,709.40

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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.