Home / 20,856.49-31,284.47-5,061.65

Finding the Fourth Proportional to 20,856.49, 31,284.47 and 5,061.65

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Solution

The fourth proportional to 20,856.49, 31,284.47 and 5,061.65 is: 7,592.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.49 : 31,284.47 = 5,061.65 : x
  2. Step 2: Convert to fraction form
    20,856.49/31,284.47 = 5,061.65/x
  3. Step 3: Cross multiply
    20,856.49x = 31,284.47 × 5,061.65
  4. Step 4: Simplify right side
    20,856.49x = 158,351,037.58
  5. Step 5: Solve for x
    x = 158,351,037.58/20,856.49
  6. Step 6: Final answer
    x = 7,592.41

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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.