Home / 15,490.57-21,376.29-8,776.06

Finding the Fourth Proportional to 15,490.57, 21,376.29 and 8,776.06

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Solution

The fourth proportional to 15,490.57, 21,376.29 and 8,776.06 is: 12,110.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.57 : 21,376.29 = 8,776.06 : x
  2. Step 2: Convert to fraction form
    15,490.57/21,376.29 = 8,776.06/x
  3. Step 3: Cross multiply
    15,490.57x = 21,376.29 × 8,776.06
  4. Step 4: Simplify right side
    15,490.57x = 187,599,603.62
  5. Step 5: Solve for x
    x = 187,599,603.62/15,490.57
  6. Step 6: Final answer
    x = 12,110.57

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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.