Home / 20,740,081.60-31,110,122.40-13,087,331.20

Finding the Fourth Proportional to 20,740,081.60, 31,110,122.40 and 13,087,331.20

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Solution

The fourth proportional to 20,740,081.60, 31,110,122.40 and 13,087,331.20 is: 19,630,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740,081.60 : 31,110,122.40 = 13,087,331.20 : x
  2. Step 2: Convert to fraction form
    20,740,081.60/31,110,122.40 = 13,087,331.20/x
  3. Step 3: Cross multiply
    20,740,081.60x = 31,110,122.40 × 13,087,331.20
  4. Step 4: Simplify right side
    20,740,081.60x = 407,148,475,521,338.81
  5. Step 5: Solve for x
    x = 407,148,475,521,338.81/20,740,081.60
  6. Step 6: Final answer
    x = 19,630,996.80

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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.