Home / 20,220,340.80-30,330,511.20-15,181,492.80

Finding the Fourth Proportional to 20,220,340.80, 30,330,511.20 and 15,181,492.80

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Solution

The fourth proportional to 20,220,340.80, 30,330,511.20 and 15,181,492.80 is: 22,772,239.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220,340.80 : 30,330,511.20 = 15,181,492.80 : x
  2. Step 2: Convert to fraction form
    20,220,340.80/30,330,511.20 = 15,181,492.80/x
  3. Step 3: Cross multiply
    20,220,340.80x = 30,330,511.20 × 15,181,492.80
  4. Step 4: Simplify right side
    20,220,340.80x = 460,462,437,403,119.38
  5. Step 5: Solve for x
    x = 460,462,437,403,119.38/20,220,340.80
  6. Step 6: Final answer
    x = 22,772,239.20

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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.