Home / 15,356.75-21,193.38-8,643.02

Finding the Fourth Proportional to 15,356.75, 21,193.38 and 8,643.02

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Solution

The fourth proportional to 15,356.75, 21,193.38 and 8,643.02 is: 11,927.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.75 : 21,193.38 = 8,643.02 : x
  2. Step 2: Convert to fraction form
    15,356.75/21,193.38 = 8,643.02/x
  3. Step 3: Cross multiply
    15,356.75x = 21,193.38 × 8,643.02
  4. Step 4: Simplify right side
    15,356.75x = 183,174,701.24
  5. Step 5: Solve for x
    x = 183,174,701.24/15,356.75
  6. Step 6: Final answer
    x = 11,927.96

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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.