Home / 15,359.90-21,197.36-8,647.84

Finding the Fourth Proportional to 15,359.90, 21,197.36 and 8,647.84

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Solution

The fourth proportional to 15,359.90, 21,197.36 and 8,647.84 is: 11,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.90 : 21,197.36 = 8,647.84 : x
  2. Step 2: Convert to fraction form
    15,359.90/21,197.36 = 8,647.84/x
  3. Step 3: Cross multiply
    15,359.90x = 21,197.36 × 8,647.84
  4. Step 4: Simplify right side
    15,359.90x = 183,311,228.48
  5. Step 5: Solve for x
    x = 183,311,228.48/15,359.90
  6. Step 6: Final answer
    x = 11,934.40

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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.