Home / 12,477,373.60-18,722,281.20-7,090,160.80

Finding the Fourth Proportional to 12,477,373.60, 18,722,281.20 and 7,090,160.80

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Solution

The fourth proportional to 12,477,373.60, 18,722,281.20 and 7,090,160.80 is: 10,638,776.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477,373.60 : 18,722,281.20 = 7,090,160.80 : x
  2. Step 2: Convert to fraction form
    12,477,373.60/18,722,281.20 = 7,090,160.80/x
  3. Step 3: Cross multiply
    12,477,373.60x = 18,722,281.20 × 7,090,160.80
  4. Step 4: Simplify right side
    12,477,373.60x = 132,743,984,250,816.95
  5. Step 5: Solve for x
    x = 132,743,984,250,816.95/12,477,373.60
  6. Step 6: Final answer
    x = 10,638,776.12

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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.