Home / 15,316.72-21,136.10-8,602.17

Finding the Fourth Proportional to 15,316.72, 21,136.10 and 8,602.17

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Solution

The fourth proportional to 15,316.72, 21,136.10 and 8,602.17 is: 11,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.72 : 21,136.10 = 8,602.17 : x
  2. Step 2: Convert to fraction form
    15,316.72/21,136.10 = 8,602.17/x
  3. Step 3: Cross multiply
    15,316.72x = 21,136.10 × 8,602.17
  4. Step 4: Simplify right side
    15,316.72x = 181,816,325.34
  5. Step 5: Solve for x
    x = 181,816,325.34/15,316.72
  6. Step 6: Final answer
    x = 11,870.45

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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.