Home / 22,690.86-31,291.65-15,021.99

Finding the Fourth Proportional to 22,690.86, 31,291.65 and 15,021.99

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Solution

The fourth proportional to 22,690.86, 31,291.65 and 15,021.99 is: 20,715.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,690.86 : 31,291.65 = 15,021.99 : x
  2. Step 2: Convert to fraction form
    22,690.86/31,291.65 = 15,021.99/x
  3. Step 3: Cross multiply
    22,690.86x = 31,291.65 × 15,021.99
  4. Step 4: Simplify right side
    22,690.86x = 470,062,853.38
  5. Step 5: Solve for x
    x = 470,062,853.38/22,690.86
  6. Step 6: Final answer
    x = 20,715.96

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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.