Home / 21,062.08-31,609.44-7,926.40

Finding the Fourth Proportional to 21,062.08, 31,609.44 and 7,926.40

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Solution

The fourth proportional to 21,062.08, 31,609.44 and 7,926.40 is: 11,895.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.08 : 31,609.44 = 7,926.40 : x
  2. Step 2: Convert to fraction form
    21,062.08/31,609.44 = 7,926.40/x
  3. Step 3: Cross multiply
    21,062.08x = 31,609.44 × 7,926.40
  4. Step 4: Simplify right side
    21,062.08x = 250,549,065.22
  5. Step 5: Solve for x
    x = 250,549,065.22/21,062.08
  6. Step 6: Final answer
    x = 11,895.74

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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.