Home / 18,679,147.20-28,018,720.80-6,562,292.40

Finding the Fourth Proportional to 18,679,147.20, 28,018,720.80 and 6,562,292.40

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Solution

The fourth proportional to 18,679,147.20, 28,018,720.80 and 6,562,292.40 is: 9,843,438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,679,147.20 : 28,018,720.80 = 6,562,292.40 : x
  2. Step 2: Convert to fraction form
    18,679,147.20/28,018,720.80 = 6,562,292.40/x
  3. Step 3: Cross multiply
    18,679,147.20x = 28,018,720.80 × 6,562,292.40
  4. Step 4: Simplify right side
    18,679,147.20x = 183,867,038,563,561.94
  5. Step 5: Solve for x
    x = 183,867,038,563,561.94/18,679,147.20
  6. Step 6: Final answer
    x = 9,843,438.60

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Similar ratio
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1.5x scale

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.