Home / 26,438.13-39,663.47-10,640.70

Finding the Fourth Proportional to 26,438.13, 39,663.47 and 10,640.70

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Solution

The fourth proportional to 26,438.13, 39,663.47 and 10,640.70 is: 15,963.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,438.13 : 39,663.47 = 10,640.70 : x
  2. Step 2: Convert to fraction form
    26,438.13/39,663.47 = 10,640.70/x
  3. Step 3: Cross multiply
    26,438.13x = 39,663.47 × 10,640.70
  4. Step 4: Simplify right side
    26,438.13x = 422,047,111.83
  5. Step 5: Solve for x
    x = 422,047,111.83/26,438.13
  6. Step 6: Final answer
    x = 15,963.58

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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.