Home / 15,316.43-21,136.59-8,602.16

Finding the Fourth Proportional to 15,316.43, 21,136.59 and 8,602.16

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Solution

The fourth proportional to 15,316.43, 21,136.59 and 8,602.16 is: 11,870.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.43 : 21,136.59 = 8,602.16 : x
  2. Step 2: Convert to fraction form
    15,316.43/21,136.59 = 8,602.16/x
  3. Step 3: Cross multiply
    15,316.43x = 21,136.59 × 8,602.16
  4. Step 4: Simplify right side
    15,316.43x = 181,820,223.35
  5. Step 5: Solve for x
    x = 181,820,223.35/15,316.43
  6. Step 6: Final answer
    x = 11,870.93

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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.