Home / 20,623,323.57-28,459,728.91-11,203,871.20

Finding the Fourth Proportional to 20,623,323.57, 28,459,728.91 and 11,203,871.20

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Solution

The fourth proportional to 20,623,323.57, 28,459,728.91 and 11,203,871.20 is: 15,461,093.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623,323.57 : 28,459,728.91 = 11,203,871.20 : x
  2. Step 2: Convert to fraction form
    20,623,323.57/28,459,728.91 = 11,203,871.20/x
  3. Step 3: Cross multiply
    20,623,323.57x = 28,459,728.91 × 11,203,871.20
  4. Step 4: Simplify right side
    20,623,323.57x = 318,859,137,037,411.88
  5. Step 5: Solve for x
    x = 318,859,137,037,411.88/20,623,323.57
  6. Step 6: Final answer
    x = 15,461,093.65

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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.