Home / 20,725,389.20-31,088,083.80-13,167,117.20

Finding the Fourth Proportional to 20,725,389.20, 31,088,083.80 and 13,167,117.20

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Solution

The fourth proportional to 20,725,389.20, 31,088,083.80 and 13,167,117.20 is: 19,750,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725,389.20 : 31,088,083.80 = 13,167,117.20 : x
  2. Step 2: Convert to fraction form
    20,725,389.20/31,088,083.80 = 13,167,117.20/x
  3. Step 3: Cross multiply
    20,725,389.20x = 31,088,083.80 × 13,167,117.20
  4. Step 4: Simplify right side
    20,725,389.20x = 409,340,442,918,021.38
  5. Step 5: Solve for x
    x = 409,340,442,918,021.38/20,725,389.20
  6. Step 6: Final answer
    x = 19,750,675.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.