Home / 20,581,384.80-28,408,671.06-13,239,218.10

Finding the Fourth Proportional to 20,581,384.80, 28,408,671.06 and 13,239,218.10

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Solution

The fourth proportional to 20,581,384.80, 28,408,671.06 and 13,239,218.10 is: 18,274,212.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581,384.80 : 28,408,671.06 = 13,239,218.10 : x
  2. Step 2: Convert to fraction form
    20,581,384.80/28,408,671.06 = 13,239,218.10/x
  3. Step 3: Cross multiply
    20,581,384.80x = 28,408,671.06 × 13,239,218.10
  4. Step 4: Simplify right side
    20,581,384.80x = 376,108,592,094,498.19
  5. Step 5: Solve for x
    x = 376,108,592,094,498.19/20,581,384.80
  6. Step 6: Final answer
    x = 18,274,212.15

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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.