Home / 21,110.77-29,131.95-11,550.16

Finding the Fourth Proportional to 21,110.77, 29,131.95 and 11,550.16

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Solution

The fourth proportional to 21,110.77, 29,131.95 and 11,550.16 is: 15,938.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.77 : 29,131.95 = 11,550.16 : x
  2. Step 2: Convert to fraction form
    21,110.77/29,131.95 = 11,550.16/x
  3. Step 3: Cross multiply
    21,110.77x = 29,131.95 × 11,550.16
  4. Step 4: Simplify right side
    21,110.77x = 336,478,683.61
  5. Step 5: Solve for x
    x = 336,478,683.61/21,110.77
  6. Step 6: Final answer
    x = 15,938.72

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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.