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Finding the Fourth Proportional to 26,703.60, 39,925.80 and 19,705.20

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Solution

The fourth proportional to 26,703.60, 39,925.80 and 19,705.20 is: 29,462.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,703.60 : 39,925.80 = 19,705.20 : x
  2. Step 2: Convert to fraction form
    26,703.60/39,925.80 = 19,705.20/x
  3. Step 3: Cross multiply
    26,703.60x = 39,925.80 × 19,705.20
  4. Step 4: Simplify right side
    26,703.60x = 786,745,874.16
  5. Step 5: Solve for x
    x = 786,745,874.16/26,703.60
  6. Step 6: Final answer
    x = 29,462.17

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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.