Home / 13,315.83-18,382.49-8,281.67

Finding the Fourth Proportional to 13,315.83, 18,382.49 and 8,281.67

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Solution

The fourth proportional to 13,315.83, 18,382.49 and 8,281.67 is: 11,432.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.83 : 18,382.49 = 8,281.67 : x
  2. Step 2: Convert to fraction form
    13,315.83/18,382.49 = 8,281.67/x
  3. Step 3: Cross multiply
    13,315.83x = 18,382.49 × 8,281.67
  4. Step 4: Simplify right side
    13,315.83x = 152,237,726.18
  5. Step 5: Solve for x
    x = 152,237,726.18/13,315.83
  6. Step 6: Final answer
    x = 11,432.84

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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.