Home / 20,572.99-30,860.63-5,780.77

Finding the Fourth Proportional to 20,572.99, 30,860.63 and 5,780.77

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Solution

The fourth proportional to 20,572.99, 30,860.63 and 5,780.77 is: 8,671.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.99 : 30,860.63 = 5,780.77 : x
  2. Step 2: Convert to fraction form
    20,572.99/30,860.63 = 5,780.77/x
  3. Step 3: Cross multiply
    20,572.99x = 30,860.63 × 5,780.77
  4. Step 4: Simplify right side
    20,572.99x = 178,398,119.71
  5. Step 5: Solve for x
    x = 178,398,119.71/20,572.99
  6. Step 6: Final answer
    x = 8,671.47

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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.