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Finding the Fourth Proportional to 12,948,992.20, 19,423,488.30 and 10,555,539.40

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Solution

The fourth proportional to 12,948,992.20, 19,423,488.30 and 10,555,539.40 is: 15,833,309.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,948,992.20 : 19,423,488.30 = 10,555,539.40 : x
  2. Step 2: Convert to fraction form
    12,948,992.20/19,423,488.30 = 10,555,539.40/x
  3. Step 3: Cross multiply
    12,948,992.20x = 19,423,488.30 × 10,555,539.40
  4. Step 4: Simplify right side
    12,948,992.20x = 205,025,396,036,089.03
  5. Step 5: Solve for x
    x = 205,025,396,036,089.03/12,948,992.20
  6. Step 6: Final answer
    x = 15,833,309.10

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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.