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Finding the Fourth Proportional to 26,705, 36,855.06 and 15,529.16

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Solution

The fourth proportional to 26,705, 36,855.06 and 15,529.16 is: 21,431.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,705 : 36,855.06 = 15,529.16 : x
  2. Step 2: Convert to fraction form
    26,705/36,855.06 = 15,529.16/x
  3. Step 3: Cross multiply
    26,705x = 36,855.06 × 15,529.16
  4. Step 4: Simplify right side
    26,705x = 572,328,123.55
  5. Step 5: Solve for x
    x = 572,328,123.55/26,705
  6. Step 6: Final answer
    x = 21,431.50

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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.