Home / 20,856.56-31,281.06-8,376.08

Finding the Fourth Proportional to 20,856.56, 31,281.06 and 8,376.08

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Solution

The fourth proportional to 20,856.56, 31,281.06 and 8,376.08 is: 12,562.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.56 : 31,281.06 = 8,376.08 : x
  2. Step 2: Convert to fraction form
    20,856.56/31,281.06 = 8,376.08/x
  3. Step 3: Cross multiply
    20,856.56x = 31,281.06 × 8,376.08
  4. Step 4: Simplify right side
    20,856.56x = 262,012,661.04
  5. Step 5: Solve for x
    x = 262,012,661.04/20,856.56
  6. Step 6: Final answer
    x = 12,562.60

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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.