Home / 15,317.82-21,136.10-9,574.59

Finding the Fourth Proportional to 15,317.82, 21,136.10 and 9,574.59

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Solution

The fourth proportional to 15,317.82, 21,136.10 and 9,574.59 is: 13,211.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.82 : 21,136.10 = 9,574.59 : x
  2. Step 2: Convert to fraction form
    15,317.82/21,136.10 = 9,574.59/x
  3. Step 3: Cross multiply
    15,317.82x = 21,136.10 × 9,574.59
  4. Step 4: Simplify right side
    15,317.82x = 202,369,491.70
  5. Step 5: Solve for x
    x = 202,369,491.70/15,317.82
  6. Step 6: Final answer
    x = 13,211.38

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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.