Home / 20,623.08-28,459.93-11,191.65

Finding the Fourth Proportional to 20,623.08, 28,459.93 and 11,191.65

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Solution

The fourth proportional to 20,623.08, 28,459.93 and 11,191.65 is: 15,444.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.08 : 28,459.93 = 11,191.65 : x
  2. Step 2: Convert to fraction form
    20,623.08/28,459.93 = 11,191.65/x
  3. Step 3: Cross multiply
    20,623.08x = 28,459.93 × 11,191.65
  4. Step 4: Simplify right side
    20,623.08x = 318,513,433.28
  5. Step 5: Solve for x
    x = 318,513,433.28/20,623.08
  6. Step 6: Final answer
    x = 15,444.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.