Home / 18,920.12-26,109.80-10,963.88

Finding the Fourth Proportional to 18,920.12, 26,109.80 and 10,963.88

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Solution

The fourth proportional to 18,920.12, 26,109.80 and 10,963.88 is: 15,130.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.12 : 26,109.80 = 10,963.88 : x
  2. Step 2: Convert to fraction form
    18,920.12/26,109.80 = 10,963.88/x
  3. Step 3: Cross multiply
    18,920.12x = 26,109.80 × 10,963.88
  4. Step 4: Simplify right side
    18,920.12x = 286,264,714.02
  5. Step 5: Solve for x
    x = 286,264,714.02/18,920.12
  6. Step 6: Final answer
    x = 15,130.17

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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.