Home / 20,636,987.44-30,959,883.60-6,989,655.28

Finding the Fourth Proportional to 20,636,987.44, 30,959,883.60 and 6,989,655.28

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Solution

The fourth proportional to 20,636,987.44, 30,959,883.60 and 6,989,655.28 is: 10,485,974.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636,987.44 : 30,959,883.60 = 6,989,655.28 : x
  2. Step 2: Convert to fraction form
    20,636,987.44/30,959,883.60 = 6,989,655.28/x
  3. Step 3: Cross multiply
    20,636,987.44x = 30,959,883.60 × 6,989,655.28
  4. Step 4: Simplify right side
    20,636,987.44x = 216,398,913,872,925.44
  5. Step 5: Solve for x
    x = 216,398,913,872,925.44/20,636,987.44
  6. Step 6: Final answer
    x = 10,485,974.01

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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.