Home / 20,898,000.30-31,347,000.45-18,665,948.10

Finding the Fourth Proportional to 20,898,000.30, 31,347,000.45 and 18,665,948.10

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Solution

The fourth proportional to 20,898,000.30, 31,347,000.45 and 18,665,948.10 is: 27,998,922.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898,000.30 : 31,347,000.45 = 18,665,948.10 : x
  2. Step 2: Convert to fraction form
    20,898,000.30/31,347,000.45 = 18,665,948.10/x
  3. Step 3: Cross multiply
    20,898,000.30x = 31,347,000.45 × 18,665,948.10
  4. Step 4: Simplify right side
    20,898,000.30x = 585,121,483,490,376.62
  5. Step 5: Solve for x
    x = 585,121,483,490,376.62/20,898,000.30
  6. Step 6: Final answer
    x = 27,998,922.15

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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.