Home / 11,319.99-15,623.80-7,229.16

Finding the Fourth Proportional to 11,319.99, 15,623.80 and 7,229.16

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Solution

The fourth proportional to 11,319.99, 15,623.80 and 7,229.16 is: 9,977.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.99 : 15,623.80 = 7,229.16 : x
  2. Step 2: Convert to fraction form
    11,319.99/15,623.80 = 7,229.16/x
  3. Step 3: Cross multiply
    11,319.99x = 15,623.80 × 7,229.16
  4. Step 4: Simplify right side
    11,319.99x = 112,946,931.94
  5. Step 5: Solve for x
    x = 112,946,931.94/11,319.99
  6. Step 6: Final answer
    x = 9,977.66

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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.