Home / 12,278,688.40-18,382,603.20-10,861,512.40

Finding the Fourth Proportional to 12,278,688.40, 18,382,603.20 and 10,861,512.40

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Solution

The fourth proportional to 12,278,688.40, 18,382,603.20 and 10,861,512.40 is: 16,260,928.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278,688.40 : 18,382,603.20 = 10,861,512.40 : x
  2. Step 2: Convert to fraction form
    12,278,688.40/18,382,603.20 = 10,861,512.40/x
  3. Step 3: Cross multiply
    12,278,688.40x = 18,382,603.20 × 10,861,512.40
  4. Step 4: Simplify right side
    12,278,688.40x = 199,662,872,601,079.69
  5. Step 5: Solve for x
    x = 199,662,872,601,079.69/12,278,688.40
  6. Step 6: Final answer
    x = 16,260,928.37

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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.