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Finding the Fourth Proportional to 26,070.40, 38,904.80 and 21,462.40

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Solution

The fourth proportional to 26,070.40, 38,904.80 and 21,462.40 is: 32,028.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,070.40 : 38,904.80 = 21,462.40 : x
  2. Step 2: Convert to fraction form
    26,070.40/38,904.80 = 21,462.40/x
  3. Step 3: Cross multiply
    26,070.40x = 38,904.80 × 21,462.40
  4. Step 4: Simplify right side
    26,070.40x = 834,990,379.52
  5. Step 5: Solve for x
    x = 834,990,379.52/26,070.40
  6. Step 6: Final answer
    x = 32,028.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.