Home / 20,438,460.48-28,205,483.04-13,207,713.60

Finding the Fourth Proportional to 20,438,460.48, 28,205,483.04 and 13,207,713.60

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Solution

The fourth proportional to 20,438,460.48, 28,205,483.04 and 13,207,713.60 is: 18,226,908.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438,460.48 : 28,205,483.04 = 13,207,713.60 : x
  2. Step 2: Convert to fraction form
    20,438,460.48/28,205,483.04 = 13,207,713.60/x
  3. Step 3: Cross multiply
    20,438,460.48x = 28,205,483.04 × 13,207,713.60
  4. Step 4: Simplify right side
    20,438,460.48x = 372,529,941,941,977.31
  5. Step 5: Solve for x
    x = 372,529,941,941,977.31/20,438,460.48
  6. Step 6: Final answer
    x = 18,226,908.15

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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.