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Finding the Fourth Proportional to 26,656.32, 39,977.50 and 7,931.32

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Solution

The fourth proportional to 26,656.32, 39,977.50 and 7,931.32 is: 11,894.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,656.32 : 39,977.50 = 7,931.32 : x
  2. Step 2: Convert to fraction form
    26,656.32/39,977.50 = 7,931.32/x
  3. Step 3: Cross multiply
    26,656.32x = 39,977.50 × 7,931.32
  4. Step 4: Simplify right side
    26,656.32x = 317,074,345.30
  5. Step 5: Solve for x
    x = 317,074,345.30/26,656.32
  6. Step 6: Final answer
    x = 11,894.90

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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.