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Finding the Fourth Proportional to 21,956.81, 32,931.48 and 6,158.21

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Solution

The fourth proportional to 21,956.81, 32,931.48 and 6,158.21 is: 9,236.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.81 : 32,931.48 = 6,158.21 : x
  2. Step 2: Convert to fraction form
    21,956.81/32,931.48 = 6,158.21/x
  3. Step 3: Cross multiply
    21,956.81x = 32,931.48 × 6,158.21
  4. Step 4: Simplify right side
    21,956.81x = 202,798,969.45
  5. Step 5: Solve for x
    x = 202,798,969.45/21,956.81
  6. Step 6: Final answer
    x = 9,236.27

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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.