Home / 15,297.81-21,111.29-8,583.92

Finding the Fourth Proportional to 15,297.81, 21,111.29 and 8,583.92

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Solution

The fourth proportional to 15,297.81, 21,111.29 and 8,583.92 is: 11,845.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.81 : 21,111.29 = 8,583.92 : x
  2. Step 2: Convert to fraction form
    15,297.81/21,111.29 = 8,583.92/x
  3. Step 3: Cross multiply
    15,297.81x = 21,111.29 × 8,583.92
  4. Step 4: Simplify right side
    15,297.81x = 181,217,624.46
  5. Step 5: Solve for x
    x = 181,217,624.46/15,297.81
  6. Step 6: Final answer
    x = 11,845.98

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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.