Home / 19,938.26-27,513.77-10,985.55

Finding the Fourth Proportional to 19,938.26, 27,513.77 and 10,985.55

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Solution

The fourth proportional to 19,938.26, 27,513.77 and 10,985.55 is: 15,159.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.26 : 27,513.77 = 10,985.55 : x
  2. Step 2: Convert to fraction form
    19,938.26/27,513.77 = 10,985.55/x
  3. Step 3: Cross multiply
    19,938.26x = 27,513.77 × 10,985.55
  4. Step 4: Simplify right side
    19,938.26x = 302,253,841.10
  5. Step 5: Solve for x
    x = 302,253,841.10/19,938.26
  6. Step 6: Final answer
    x = 15,159.49

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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.