Home / 15,347.66-21,180.02-9,378.09

Finding the Fourth Proportional to 15,347.66, 21,180.02 and 9,378.09

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Solution

The fourth proportional to 15,347.66, 21,180.02 and 9,378.09 is: 12,941.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.66 : 21,180.02 = 9,378.09 : x
  2. Step 2: Convert to fraction form
    15,347.66/21,180.02 = 9,378.09/x
  3. Step 3: Cross multiply
    15,347.66x = 21,180.02 × 9,378.09
  4. Step 4: Simplify right side
    15,347.66x = 198,628,086.87
  5. Step 5: Solve for x
    x = 198,628,086.87/15,347.66
  6. Step 6: Final answer
    x = 12,941.92

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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.