Home / 26,381.08-39,570.40-7,660.70

Finding the Fourth Proportional to 26,381.08, 39,570.40 and 7,660.70

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Solution

The fourth proportional to 26,381.08, 39,570.40 and 7,660.70 is: 11,490.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,381.08 : 39,570.40 = 7,660.70 : x
  2. Step 2: Convert to fraction form
    26,381.08/39,570.40 = 7,660.70/x
  3. Step 3: Cross multiply
    26,381.08x = 39,570.40 × 7,660.70
  4. Step 4: Simplify right side
    26,381.08x = 303,136,963.28
  5. Step 5: Solve for x
    x = 303,136,963.28/26,381.08
  6. Step 6: Final answer
    x = 11,490.70

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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.