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Finding the Fourth Proportional to 29,638.40, 40,894.86 and 16,888.86

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Solution

The fourth proportional to 29,638.40, 40,894.86 and 16,888.86 is: 23,303.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,638.40 : 40,894.86 = 16,888.86 : x
  2. Step 2: Convert to fraction form
    29,638.40/40,894.86 = 16,888.86/x
  3. Step 3: Cross multiply
    29,638.40x = 40,894.86 × 16,888.86
  4. Step 4: Simplify right side
    29,638.40x = 690,667,565.26
  5. Step 5: Solve for x
    x = 690,667,565.26/29,638.40
  6. Step 6: Final answer
    x = 23,303.13

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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.