Home / 15,314.80-21,133.88-9,356.44

Finding the Fourth Proportional to 15,314.80, 21,133.88 and 9,356.44

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Solution

The fourth proportional to 15,314.80, 21,133.88 and 9,356.44 is: 12,911.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314.80 : 21,133.88 = 9,356.44 : x
  2. Step 2: Convert to fraction form
    15,314.80/21,133.88 = 9,356.44/x
  3. Step 3: Cross multiply
    15,314.80x = 21,133.88 × 9,356.44
  4. Step 4: Simplify right side
    15,314.80x = 197,737,880.19
  5. Step 5: Solve for x
    x = 197,737,880.19/15,314.80
  6. Step 6: Final answer
    x = 12,911.55

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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.