Home / 10,369,981.20-15,554,971.80-8,205,142.80

Finding the Fourth Proportional to 10,369,981.20, 15,554,971.80 and 8,205,142.80

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Solution

The fourth proportional to 10,369,981.20, 15,554,971.80 and 8,205,142.80 is: 12,307,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369,981.20 : 15,554,971.80 = 8,205,142.80 : x
  2. Step 2: Convert to fraction form
    10,369,981.20/15,554,971.80 = 8,205,142.80/x
  3. Step 3: Cross multiply
    10,369,981.20x = 15,554,971.80 × 8,205,142.80
  4. Step 4: Simplify right side
    10,369,981.20x = 127,630,764,868,973.05
  5. Step 5: Solve for x
    x = 127,630,764,868,973.05/10,369,981.20
  6. Step 6: Final answer
    x = 12,307,714.20

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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.