Home / 20,561.51-30,842.16-4,979.13

Finding the Fourth Proportional to 20,561.51, 30,842.16 and 4,979.13

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Solution

The fourth proportional to 20,561.51, 30,842.16 and 4,979.13 is: 7,468.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.51 : 30,842.16 = 4,979.13 : x
  2. Step 2: Convert to fraction form
    20,561.51/30,842.16 = 4,979.13/x
  3. Step 3: Cross multiply
    20,561.51x = 30,842.16 × 4,979.13
  4. Step 4: Simplify right side
    20,561.51x = 153,567,124.12
  5. Step 5: Solve for x
    x = 153,567,124.12/20,561.51
  6. Step 6: Final answer
    x = 7,468.67

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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.