Home / 14,478.76-19,981.11-8,191

Finding the Fourth Proportional to 14,478.76, 19,981.11 and 8,191

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Solution

The fourth proportional to 14,478.76, 19,981.11 and 8,191 is: 11,303.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.76 : 19,981.11 = 8,191 : x
  2. Step 2: Convert to fraction form
    14,478.76/19,981.11 = 8,191/x
  3. Step 3: Cross multiply
    14,478.76x = 19,981.11 × 8,191
  4. Step 4: Simplify right side
    14,478.76x = 163,665,272.01
  5. Step 5: Solve for x
    x = 163,665,272.01/14,478.76
  6. Step 6: Final answer
    x = 11,303.82

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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.