Home / 19,938.80-27,515.63-10,985.87

Finding the Fourth Proportional to 19,938.80, 27,515.63 and 10,985.87

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Solution

The fourth proportional to 19,938.80, 27,515.63 and 10,985.87 is: 15,160.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.80 : 27,515.63 = 10,985.87 : x
  2. Step 2: Convert to fraction form
    19,938.80/27,515.63 = 10,985.87/x
  3. Step 3: Cross multiply
    19,938.80x = 27,515.63 × 10,985.87
  4. Step 4: Simplify right side
    19,938.80x = 302,283,134.15
  5. Step 5: Solve for x
    x = 302,283,134.15/19,938.80
  6. Step 6: Final answer
    x = 15,160.55

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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.