Home / 12,288,813.60-18,447,217.20-7,242,967.20

Finding the Fourth Proportional to 12,288,813.60, 18,447,217.20 and 7,242,967.20

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Solution

The fourth proportional to 12,288,813.60, 18,447,217.20 and 7,242,967.20 is: 10,872,700.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288,813.60 : 18,447,217.20 = 7,242,967.20 : x
  2. Step 2: Convert to fraction form
    12,288,813.60/18,447,217.20 = 7,242,967.20/x
  3. Step 3: Cross multiply
    12,288,813.60x = 18,447,217.20 × 7,242,967.20
  4. Step 4: Simplify right side
    12,288,813.60x = 133,612,589,110,875.84
  5. Step 5: Solve for x
    x = 133,612,589,110,875.84/12,288,813.60
  6. Step 6: Final answer
    x = 10,872,700.45

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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.