Home / 21,283,742.60-31,925,613.90-20,947,819.40

Finding the Fourth Proportional to 21,283,742.60, 31,925,613.90 and 20,947,819.40

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Solution

The fourth proportional to 21,283,742.60, 31,925,613.90 and 20,947,819.40 is: 31,421,729.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283,742.60 : 31,925,613.90 = 20,947,819.40 : x
  2. Step 2: Convert to fraction form
    21,283,742.60/31,925,613.90 = 20,947,819.40/x
  3. Step 3: Cross multiply
    21,283,742.60x = 31,925,613.90 × 20,947,819.40
  4. Step 4: Simplify right side
    21,283,742.60x = 668,771,994,211,329.62
  5. Step 5: Solve for x
    x = 668,771,994,211,329.62/21,283,742.60
  6. Step 6: Final answer
    x = 31,421,729.10

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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.