Home / 20,779,819.20-31,106,743.20-15,698,980.80

Finding the Fourth Proportional to 20,779,819.20, 31,106,743.20 and 15,698,980.80

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Solution

The fourth proportional to 20,779,819.20, 31,106,743.20 and 15,698,980.80 is: 23,500,886.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779,819.20 : 31,106,743.20 = 15,698,980.80 : x
  2. Step 2: Convert to fraction form
    20,779,819.20/31,106,743.20 = 15,698,980.80/x
  3. Step 3: Cross multiply
    20,779,819.20x = 31,106,743.20 × 15,698,980.80
  4. Step 4: Simplify right side
    20,779,819.20x = 488,344,164,247,330.56
  5. Step 5: Solve for x
    x = 488,344,164,247,330.56/20,779,819.20
  6. Step 6: Final answer
    x = 23,500,886.10

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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.