Home / 26,702.16-36,809.64-21,018.68

Finding the Fourth Proportional to 26,702.16, 36,809.64 and 21,018.68

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Solution

The fourth proportional to 26,702.16, 36,809.64 and 21,018.68 is: 28,974.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,702.16 : 36,809.64 = 21,018.68 : x
  2. Step 2: Convert to fraction form
    26,702.16/36,809.64 = 21,018.68/x
  3. Step 3: Cross multiply
    26,702.16x = 36,809.64 × 21,018.68
  4. Step 4: Simplify right side
    26,702.16x = 773,690,044.08
  5. Step 5: Solve for x
    x = 773,690,044.08/26,702.16
  6. Step 6: Final answer
    x = 28,974.81

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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.