Home / 21,988.36-32,984.12-7,956.72

Finding the Fourth Proportional to 21,988.36, 32,984.12 and 7,956.72

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Solution

The fourth proportional to 21,988.36, 32,984.12 and 7,956.72 is: 11,935.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.36 : 32,984.12 = 7,956.72 : x
  2. Step 2: Convert to fraction form
    21,988.36/32,984.12 = 7,956.72/x
  3. Step 3: Cross multiply
    21,988.36x = 32,984.12 × 7,956.72
  4. Step 4: Simplify right side
    21,988.36x = 262,445,407.29
  5. Step 5: Solve for x
    x = 262,445,407.29/21,988.36
  6. Step 6: Final answer
    x = 11,935.65

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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.