Home / 20,518,038.80-28,314,680.64-11,225,521.04

Finding the Fourth Proportional to 20,518,038.80, 28,314,680.64 and 11,225,521.04

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Solution

The fourth proportional to 20,518,038.80, 28,314,680.64 and 11,225,521.04 is: 15,491,102.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518,038.80 : 28,314,680.64 = 11,225,521.04 : x
  2. Step 2: Convert to fraction form
    20,518,038.80/28,314,680.64 = 11,225,521.04/x
  3. Step 3: Cross multiply
    20,518,038.80x = 28,314,680.64 × 11,225,521.04
  4. Step 4: Simplify right side
    20,518,038.80x = 317,847,043,265,200.62
  5. Step 5: Solve for x
    x = 317,847,043,265,200.62/20,518,038.80
  6. Step 6: Final answer
    x = 15,491,102.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.