Home / 12,285,994.60-18,442,988.70-7,240,148.20

Finding the Fourth Proportional to 12,285,994.60, 18,442,988.70 and 7,240,148.20

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Solution

The fourth proportional to 12,285,994.60, 18,442,988.70 and 7,240,148.20 is: 10,868,470.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285,994.60 : 18,442,988.70 = 7,240,148.20 : x
  2. Step 2: Convert to fraction form
    12,285,994.60/18,442,988.70 = 7,240,148.20/x
  3. Step 3: Cross multiply
    12,285,994.60x = 18,442,988.70 × 7,240,148.20
  4. Step 4: Simplify right side
    12,285,994.60x = 133,529,971,438,925.34
  5. Step 5: Solve for x
    x = 133,529,971,438,925.34/12,285,994.60
  6. Step 6: Final answer
    x = 10,868,470.63

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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.