Home / 15,297,428.32-21,109,649.76-8,420,567.20

Finding the Fourth Proportional to 15,297,428.32, 21,109,649.76 and 8,420,567.20

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Solution

The fourth proportional to 15,297,428.32, 21,109,649.76 and 8,420,567.20 is: 11,619,941.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297,428.32 : 21,109,649.76 = 8,420,567.20 : x
  2. Step 2: Convert to fraction form
    15,297,428.32/21,109,649.76 = 8,420,567.20/x
  3. Step 3: Cross multiply
    15,297,428.32x = 21,109,649.76 × 8,420,567.20
  4. Step 4: Simplify right side
    15,297,428.32x = 177,755,224,372,543.88
  5. Step 5: Solve for x
    x = 177,755,224,372,543.88/15,297,428.32
  6. Step 6: Final answer
    x = 11,619,941.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.