Home / 15,317.56-21,136.74-8,601.66

Finding the Fourth Proportional to 15,317.56, 21,136.74 and 8,601.66

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Solution

The fourth proportional to 15,317.56, 21,136.74 and 8,601.66 is: 11,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.56 : 21,136.74 = 8,601.66 : x
  2. Step 2: Convert to fraction form
    15,317.56/21,136.74 = 8,601.66/x
  3. Step 3: Cross multiply
    15,317.56x = 21,136.74 × 8,601.66
  4. Step 4: Simplify right side
    15,317.56x = 181,811,050.99
  5. Step 5: Solve for x
    x = 181,811,050.99/15,317.56
  6. Step 6: Final answer
    x = 11,869.45

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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.