Home / 25,085.78-34,618.77-13,756.31

Finding the Fourth Proportional to 25,085.78, 34,618.77 and 13,756.31

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Solution

The fourth proportional to 25,085.78, 34,618.77 and 13,756.31 is: 18,983.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,085.78 : 34,618.77 = 13,756.31 : x
  2. Step 2: Convert to fraction form
    25,085.78/34,618.77 = 13,756.31/x
  3. Step 3: Cross multiply
    25,085.78x = 34,618.77 × 13,756.31
  4. Step 4: Simplify right side
    25,085.78x = 476,226,618.49
  5. Step 5: Solve for x
    x = 476,226,618.49/25,085.78
  6. Step 6: Final answer
    x = 18,983.93

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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.