Home / 11,316.34-15,615.82-6,280.57

Finding the Fourth Proportional to 11,316.34, 15,615.82 and 6,280.57

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Solution

The fourth proportional to 11,316.34, 15,615.82 and 6,280.57 is: 8,666.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.34 : 15,615.82 = 6,280.57 : x
  2. Step 2: Convert to fraction form
    11,316.34/15,615.82 = 6,280.57/x
  3. Step 3: Cross multiply
    11,316.34x = 15,615.82 × 6,280.57
  4. Step 4: Simplify right side
    11,316.34x = 98,076,207.81
  5. Step 5: Solve for x
    x = 98,076,207.81/11,316.34
  6. Step 6: Final answer
    x = 8,666.78

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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.