Home / 20,778,421.40-31,140,452.55-11,173,117.40

Finding the Fourth Proportional to 20,778,421.40, 31,140,452.55 and 11,173,117.40

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Solution

The fourth proportional to 20,778,421.40, 31,140,452.55 and 11,173,117.40 is: 16,745,060.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778,421.40 : 31,140,452.55 = 11,173,117.40 : x
  2. Step 2: Convert to fraction form
    20,778,421.40/31,140,452.55 = 11,173,117.40/x
  3. Step 3: Cross multiply
    20,778,421.40x = 31,140,452.55 × 11,173,117.40
  4. Step 4: Simplify right side
    20,778,421.40x = 347,935,932,230,279.38
  5. Step 5: Solve for x
    x = 347,935,932,230,279.38/20,778,421.40
  6. Step 6: Final answer
    x = 16,745,060.92

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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.