Home / 19,938.20-27,515.03-10,985.61

Finding the Fourth Proportional to 19,938.20, 27,515.03 and 10,985.61

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Solution

The fourth proportional to 19,938.20, 27,515.03 and 10,985.61 is: 15,160.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.20 : 27,515.03 = 10,985.61 : x
  2. Step 2: Convert to fraction form
    19,938.20/27,515.03 = 10,985.61/x
  3. Step 3: Cross multiply
    19,938.20x = 27,515.03 × 10,985.61
  4. Step 4: Simplify right side
    19,938.20x = 302,269,333.79
  5. Step 5: Solve for x
    x = 302,269,333.79/19,938.20
  6. Step 6: Final answer
    x = 15,160.32

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1.5x scale

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.