Home / 15,316.56-21,135.36-8,600.66

Finding the Fourth Proportional to 15,316.56, 21,135.36 and 8,600.66

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Solution

The fourth proportional to 15,316.56, 21,135.36 and 8,600.66 is: 11,868.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.56 : 21,135.36 = 8,600.66 : x
  2. Step 2: Convert to fraction form
    15,316.56/21,135.36 = 8,600.66/x
  3. Step 3: Cross multiply
    15,316.56x = 21,135.36 × 8,600.66
  4. Step 4: Simplify right side
    15,316.56x = 181,778,045.34
  5. Step 5: Solve for x
    x = 181,778,045.34/15,316.56
  6. Step 6: Final answer
    x = 11,868.07

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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.