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Finding the Fourth Proportional to 26,018.70, 38,970.45 and 21,410.70

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Solution

The fourth proportional to 26,018.70, 38,970.45 and 21,410.70 is: 32,068.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,018.70 : 38,970.45 = 21,410.70 : x
  2. Step 2: Convert to fraction form
    26,018.70/38,970.45 = 21,410.70/x
  3. Step 3: Cross multiply
    26,018.70x = 38,970.45 × 21,410.70
  4. Step 4: Simplify right side
    26,018.70x = 834,384,613.82
  5. Step 5: Solve for x
    x = 834,384,613.82/26,018.70
  6. Step 6: Final answer
    x = 32,068.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.