Home / 15,483.08-21,359.80-9,191.81

Finding the Fourth Proportional to 15,483.08, 21,359.80 and 9,191.81

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Solution

The fourth proportional to 15,483.08, 21,359.80 and 9,191.81 is: 12,680.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,483.08 : 21,359.80 = 9,191.81 : x
  2. Step 2: Convert to fraction form
    15,483.08/21,359.80 = 9,191.81/x
  3. Step 3: Cross multiply
    15,483.08x = 21,359.80 × 9,191.81
  4. Step 4: Simplify right side
    15,483.08x = 196,335,288.13
  5. Step 5: Solve for x
    x = 196,335,288.13/15,483.08
  6. Step 6: Final answer
    x = 12,680.63

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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.