Home / 18,929.55-26,120.48-10,971.39

Finding the Fourth Proportional to 18,929.55, 26,120.48 and 10,971.39

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Solution

The fourth proportional to 18,929.55, 26,120.48 and 10,971.39 is: 15,139.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.55 : 26,120.48 = 10,971.39 : x
  2. Step 2: Convert to fraction form
    18,929.55/26,120.48 = 10,971.39/x
  3. Step 3: Cross multiply
    18,929.55x = 26,120.48 × 10,971.39
  4. Step 4: Simplify right side
    18,929.55x = 286,577,918.21
  5. Step 5: Solve for x
    x = 286,577,918.21/18,929.55
  6. Step 6: Final answer
    x = 15,139.18

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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.