Home / 26,490.51-36,540.69-15,728.08

Finding the Fourth Proportional to 26,490.51, 36,540.69 and 15,728.08

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Solution

The fourth proportional to 26,490.51, 36,540.69 and 15,728.08 is: 21,695.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,490.51 : 36,540.69 = 15,728.08 : x
  2. Step 2: Convert to fraction form
    26,490.51/36,540.69 = 15,728.08/x
  3. Step 3: Cross multiply
    26,490.51x = 36,540.69 × 15,728.08
  4. Step 4: Simplify right side
    26,490.51x = 574,714,813.76
  5. Step 5: Solve for x
    x = 574,714,813.76/26,490.51
  6. Step 6: Final answer
    x = 21,695.12

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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.