Home / 15,315.30-21,136.14-9,350.19

Finding the Fourth Proportional to 15,315.30, 21,136.14 and 9,350.19

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Solution

The fourth proportional to 15,315.30, 21,136.14 and 9,350.19 is: 12,903.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.30 : 21,136.14 = 9,350.19 : x
  2. Step 2: Convert to fraction form
    15,315.30/21,136.14 = 9,350.19/x
  3. Step 3: Cross multiply
    15,315.30x = 21,136.14 × 9,350.19
  4. Step 4: Simplify right side
    15,315.30x = 197,626,924.87
  5. Step 5: Solve for x
    x = 197,626,924.87/15,315.30
  6. Step 6: Final answer
    x = 12,903.89

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Half scale
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Double scale
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Similar ratio
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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.