Home / 20,778,344.40-31,140,337.05-11,173,040.40

Finding the Fourth Proportional to 20,778,344.40, 31,140,337.05 and 11,173,040.40

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Solution

The fourth proportional to 20,778,344.40, 31,140,337.05 and 11,173,040.40 is: 16,744,945.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778,344.40 : 31,140,337.05 = 11,173,040.40 : x
  2. Step 2: Convert to fraction form
    20,778,344.40/31,140,337.05 = 11,173,040.40/x
  3. Step 3: Cross multiply
    20,778,344.40x = 31,140,337.05 × 11,173,040.40
  4. Step 4: Simplify right side
    20,778,344.40x = 347,932,243,929,266.81
  5. Step 5: Solve for x
    x = 347,932,243,929,266.81/20,778,344.40
  6. Step 6: Final answer
    x = 16,744,945.47

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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.