Home / 15,316.81-21,136.19-8,602.29

Finding the Fourth Proportional to 15,316.81, 21,136.19 and 8,602.29

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Solution

The fourth proportional to 15,316.81, 21,136.19 and 8,602.29 is: 11,870.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.81 : 21,136.19 = 8,602.29 : x
  2. Step 2: Convert to fraction form
    15,316.81/21,136.19 = 8,602.29/x
  3. Step 3: Cross multiply
    15,316.81x = 21,136.19 × 8,602.29
  4. Step 4: Simplify right side
    15,316.81x = 181,819,592.86
  5. Step 5: Solve for x
    x = 181,819,592.86/15,316.81
  6. Step 6: Final answer
    x = 11,870.59

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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.