Home / 20,138,386.80-30,207,580.20-16,989,106.80

Finding the Fourth Proportional to 20,138,386.80, 30,207,580.20 and 16,989,106.80

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Solution

The fourth proportional to 20,138,386.80, 30,207,580.20 and 16,989,106.80 is: 25,483,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138,386.80 : 30,207,580.20 = 16,989,106.80 : x
  2. Step 2: Convert to fraction form
    20,138,386.80/30,207,580.20 = 16,989,106.80/x
  3. Step 3: Cross multiply
    20,138,386.80x = 30,207,580.20 × 16,989,106.80
  4. Step 4: Simplify right side
    20,138,386.80x = 513,199,806,187,365.38
  5. Step 5: Solve for x
    x = 513,199,806,187,365.38/20,138,386.80
  6. Step 6: Final answer
    x = 25,483,660.20

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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.