Home / 20,398,876.80-30,598,315.20-18,343,971.60

Finding the Fourth Proportional to 20,398,876.80, 30,598,315.20 and 18,343,971.60

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Solution

The fourth proportional to 20,398,876.80, 30,598,315.20 and 18,343,971.60 is: 27,515,957.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398,876.80 : 30,598,315.20 = 18,343,971.60 : x
  2. Step 2: Convert to fraction form
    20,398,876.80/30,598,315.20 = 18,343,971.60/x
  3. Step 3: Cross multiply
    20,398,876.80x = 30,598,315.20 × 18,343,971.60
  4. Step 4: Simplify right side
    20,398,876.80x = 561,294,625,036,648.38
  5. Step 5: Solve for x
    x = 561,294,625,036,648.38/20,398,876.80
  6. Step 6: Final answer
    x = 27,515,957.40

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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.