Home / 26,686.89-36,785.49-21,012.63

Finding the Fourth Proportional to 26,686.89, 36,785.49 and 21,012.63

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Solution

The fourth proportional to 26,686.89, 36,785.49 and 21,012.63 is: 28,964.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.89 : 36,785.49 = 21,012.63 : x
  2. Step 2: Convert to fraction form
    26,686.89/36,785.49 = 21,012.63/x
  3. Step 3: Cross multiply
    26,686.89x = 36,785.49 × 21,012.63
  4. Step 4: Simplify right side
    26,686.89x = 772,959,890.74
  5. Step 5: Solve for x
    x = 772,959,890.74/26,686.89
  6. Step 6: Final answer
    x = 28,964.03

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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.