Home / 20,672,389.18-28,527,897.45-11,507,197.06

Finding the Fourth Proportional to 20,672,389.18, 28,527,897.45 and 11,507,197.06

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Solution

The fourth proportional to 20,672,389.18, 28,527,897.45 and 11,507,197.06 is: 15,879,932.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,389.18 : 28,527,897.45 = 11,507,197.06 : x
  2. Step 2: Convert to fraction form
    20,672,389.18/28,527,897.45 = 11,507,197.06/x
  3. Step 3: Cross multiply
    20,672,389.18x = 28,527,897.45 × 11,507,197.06
  4. Step 4: Simplify right side
    20,672,389.18x = 328,276,137,664,621.50
  5. Step 5: Solve for x
    x = 328,276,137,664,621.50/20,672,389.18
  6. Step 6: Final answer
    x = 15,879,932.16

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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.