Home / 18,686,819.10-28,030,228.65-13,207,071.90

Finding the Fourth Proportional to 18,686,819.10, 28,030,228.65 and 13,207,071.90

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Solution

The fourth proportional to 18,686,819.10, 28,030,228.65 and 13,207,071.90 is: 19,810,607.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,819.10 : 28,030,228.65 = 13,207,071.90 : x
  2. Step 2: Convert to fraction form
    18,686,819.10/28,030,228.65 = 13,207,071.90/x
  3. Step 3: Cross multiply
    18,686,819.10x = 28,030,228.65 × 13,207,071.90
  4. Step 4: Simplify right side
    18,686,819.10x = 370,197,245,153,989.94
  5. Step 5: Solve for x
    x = 370,197,245,153,989.94/18,686,819.10
  6. Step 6: Final answer
    x = 19,810,607.85

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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.