Home / 18,921.78-26,114.10-10,424.77

Finding the Fourth Proportional to 18,921.78, 26,114.10 and 10,424.77

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Solution

The fourth proportional to 18,921.78, 26,114.10 and 10,424.77 is: 14,387.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.78 : 26,114.10 = 10,424.77 : x
  2. Step 2: Convert to fraction form
    18,921.78/26,114.10 = 10,424.77/x
  3. Step 3: Cross multiply
    18,921.78x = 26,114.10 × 10,424.77
  4. Step 4: Simplify right side
    18,921.78x = 272,233,486.26
  5. Step 5: Solve for x
    x = 272,233,486.26/18,921.78
  6. Step 6: Final answer
    x = 14,387.31

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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.