Home / 20,720,862.80-31,081,294.20-13,162,590.80

Finding the Fourth Proportional to 20,720,862.80, 31,081,294.20 and 13,162,590.80

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Solution

The fourth proportional to 20,720,862.80, 31,081,294.20 and 13,162,590.80 is: 19,743,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720,862.80 : 31,081,294.20 = 13,162,590.80 : x
  2. Step 2: Convert to fraction form
    20,720,862.80/31,081,294.20 = 13,162,590.80/x
  3. Step 3: Cross multiply
    20,720,862.80x = 31,081,294.20 × 13,162,590.80
  4. Step 4: Simplify right side
    20,720,862.80x = 409,110,357,089,013.38
  5. Step 5: Solve for x
    x = 409,110,357,089,013.38/20,720,862.80
  6. Step 6: Final answer
    x = 19,743,886.20

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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.