Home / 15,637.41-21,581.67-8,921.49

Finding the Fourth Proportional to 15,637.41, 21,581.67 and 8,921.49

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Solution

The fourth proportional to 15,637.41, 21,581.67 and 8,921.49 is: 12,312.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,637.41 : 21,581.67 = 8,921.49 : x
  2. Step 2: Convert to fraction form
    15,637.41/21,581.67 = 8,921.49/x
  3. Step 3: Cross multiply
    15,637.41x = 21,581.67 × 8,921.49
  4. Step 4: Simplify right side
    15,637.41x = 192,540,653.09
  5. Step 5: Solve for x
    x = 192,540,653.09/15,637.41
  6. Step 6: Final answer
    x = 12,312.82

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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.