Home / 15,316.38-21,136.59-8,602.20

Finding the Fourth Proportional to 15,316.38, 21,136.59 and 8,602.20

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Solution

The fourth proportional to 15,316.38, 21,136.59 and 8,602.20 is: 11,871.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.38 : 21,136.59 = 8,602.20 : x
  2. Step 2: Convert to fraction form
    15,316.38/21,136.59 = 8,602.20/x
  3. Step 3: Cross multiply
    15,316.38x = 21,136.59 × 8,602.20
  4. Step 4: Simplify right side
    15,316.38x = 181,821,174.50
  5. Step 5: Solve for x
    x = 181,821,174.50/15,316.38
  6. Step 6: Final answer
    x = 11,871.03

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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.