Home / 20,806,398.72-31,211,697.60-7,849,298.52

Finding the Fourth Proportional to 20,806,398.72, 31,211,697.60 and 7,849,298.52

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Solution

The fourth proportional to 20,806,398.72, 31,211,697.60 and 7,849,298.52 is: 11,774,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806,398.72 : 31,211,697.60 = 7,849,298.52 : x
  2. Step 2: Convert to fraction form
    20,806,398.72/31,211,697.60 = 7,849,298.52/x
  3. Step 3: Cross multiply
    20,806,398.72x = 31,211,697.60 × 7,849,298.52
  4. Step 4: Simplify right side
    20,806,398.72x = 244,989,931,778,367.56
  5. Step 5: Solve for x
    x = 244,989,931,778,367.56/20,806,398.72
  6. Step 6: Final answer
    x = 11,774,739.83

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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.