Home / 26,279.36-39,386.04-13,135.40

Finding the Fourth Proportional to 26,279.36, 39,386.04 and 13,135.40

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Solution

The fourth proportional to 26,279.36, 39,386.04 and 13,135.40 is: 19,686.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,279.36 : 39,386.04 = 13,135.40 : x
  2. Step 2: Convert to fraction form
    26,279.36/39,386.04 = 13,135.40/x
  3. Step 3: Cross multiply
    26,279.36x = 39,386.04 × 13,135.40
  4. Step 4: Simplify right side
    26,279.36x = 517,351,389.82
  5. Step 5: Solve for x
    x = 517,351,389.82/26,279.36
  6. Step 6: Final answer
    x = 19,686.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.