Home / 12,112,621.40-18,144,437.70-7,549,664.60

Finding the Fourth Proportional to 12,112,621.40, 18,144,437.70 and 7,549,664.60

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Solution

The fourth proportional to 12,112,621.40, 18,144,437.70 and 7,549,664.60 is: 11,309,229.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112,621.40 : 18,144,437.70 = 7,549,664.60 : x
  2. Step 2: Convert to fraction form
    12,112,621.40/18,144,437.70 = 7,549,664.60/x
  3. Step 3: Cross multiply
    12,112,621.40x = 18,144,437.70 × 7,549,664.60
  4. Step 4: Simplify right side
    12,112,621.40x = 136,984,418,990,595.41
  5. Step 5: Solve for x
    x = 136,984,418,990,595.41/12,112,621.40
  6. Step 6: Final answer
    x = 11,309,229.81

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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.