Home / 21,985.08-32,979.66-7,948.62

Finding the Fourth Proportional to 21,985.08, 32,979.66 and 7,948.62

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Solution

The fourth proportional to 21,985.08, 32,979.66 and 7,948.62 is: 11,923.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.08 : 32,979.66 = 7,948.62 : x
  2. Step 2: Convert to fraction form
    21,985.08/32,979.66 = 7,948.62/x
  3. Step 3: Cross multiply
    21,985.08x = 32,979.66 × 7,948.62
  4. Step 4: Simplify right side
    21,985.08x = 262,142,785.07
  5. Step 5: Solve for x
    x = 262,142,785.07/21,985.08
  6. Step 6: Final answer
    x = 11,923.67

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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.