Home / 15,623.74-21,561.33-8,908.28

Finding the Fourth Proportional to 15,623.74, 21,561.33 and 8,908.28

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Solution

The fourth proportional to 15,623.74, 21,561.33 and 8,908.28 is: 12,293.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,623.74 : 21,561.33 = 8,908.28 : x
  2. Step 2: Convert to fraction form
    15,623.74/21,561.33 = 8,908.28/x
  3. Step 3: Cross multiply
    15,623.74x = 21,561.33 × 8,908.28
  4. Step 4: Simplify right side
    15,623.74x = 192,074,364.81
  5. Step 5: Solve for x
    x = 192,074,364.81/15,623.74
  6. Step 6: Final answer
    x = 12,293.75

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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.