Home / 19,391.10-26,758.31-10,892.78

Finding the Fourth Proportional to 19,391.10, 26,758.31 and 10,892.78

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Solution

The fourth proportional to 19,391.10, 26,758.31 and 10,892.78 is: 15,031.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,391.10 : 26,758.31 = 10,892.78 : x
  2. Step 2: Convert to fraction form
    19,391.10/26,758.31 = 10,892.78/x
  3. Step 3: Cross multiply
    19,391.10x = 26,758.31 × 10,892.78
  4. Step 4: Simplify right side
    19,391.10x = 291,472,384.00
  5. Step 5: Solve for x
    x = 291,472,384.00/19,391.10
  6. Step 6: Final answer
    x = 15,031.25

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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.