Home / 18,721,808.60-28,082,712.90-15,320,586.20

Finding the Fourth Proportional to 18,721,808.60, 28,082,712.90 and 15,320,586.20

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Solution

The fourth proportional to 18,721,808.60, 28,082,712.90 and 15,320,586.20 is: 22,980,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,808.60 : 28,082,712.90 = 15,320,586.20 : x
  2. Step 2: Convert to fraction form
    18,721,808.60/28,082,712.90 = 15,320,586.20/x
  3. Step 3: Cross multiply
    18,721,808.60x = 28,082,712.90 × 15,320,586.20
  4. Step 4: Simplify right side
    18,721,808.60x = 430,243,623,714,301.94
  5. Step 5: Solve for x
    x = 430,243,623,714,301.94/18,721,808.60
  6. Step 6: Final answer
    x = 22,980,879.30

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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.