Home / 20,218,985.30-30,307,810.80-9,968,078.90

Finding the Fourth Proportional to 20,218,985.30, 30,307,810.80 and 9,968,078.90

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Solution

The fourth proportional to 20,218,985.30, 30,307,810.80 and 9,968,078.90 is: 14,941,929.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,985.30 : 30,307,810.80 = 9,968,078.90 : x
  2. Step 2: Convert to fraction form
    20,218,985.30/30,307,810.80 = 9,968,078.90/x
  3. Step 3: Cross multiply
    20,218,985.30x = 30,307,810.80 × 9,968,078.90
  4. Step 4: Simplify right side
    20,218,985.30x = 302,110,649,340,672.12
  5. Step 5: Solve for x
    x = 302,110,649,340,672.12/20,218,985.30
  6. Step 6: Final answer
    x = 14,941,929.32

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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.