Home / 26,440.32-36,525.60-21,128.16

Finding the Fourth Proportional to 26,440.32, 36,525.60 and 21,128.16

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Solution

The fourth proportional to 26,440.32, 36,525.60 and 21,128.16 is: 29,187.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,440.32 : 36,525.60 = 21,128.16 : x
  2. Step 2: Convert to fraction form
    26,440.32/36,525.60 = 21,128.16/x
  3. Step 3: Cross multiply
    26,440.32x = 36,525.60 × 21,128.16
  4. Step 4: Simplify right side
    26,440.32x = 771,718,720.90
  5. Step 5: Solve for x
    x = 771,718,720.90/26,440.32
  6. Step 6: Final answer
    x = 29,187.19

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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.