Home / 13,000,988.60-19,503,815.70-5,428,719.80

Finding the Fourth Proportional to 13,000,988.60, 19,503,815.70 and 5,428,719.80

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Solution

The fourth proportional to 13,000,988.60, 19,503,815.70 and 5,428,719.80 is: 8,144,053.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,000,988.60 : 19,503,815.70 = 5,428,719.80 : x
  2. Step 2: Convert to fraction form
    13,000,988.60/19,503,815.70 = 5,428,719.80/x
  3. Step 3: Cross multiply
    13,000,988.60x = 19,503,815.70 × 5,428,719.80
  4. Step 4: Simplify right side
    13,000,988.60x = 105,880,750,466,140.86
  5. Step 5: Solve for x
    x = 105,880,750,466,140.86/13,000,988.60
  6. Step 6: Final answer
    x = 8,144,053.79

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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.