Home / 11,315.54-15,615.80-6,280.13

Finding the Fourth Proportional to 11,315.54, 15,615.80 and 6,280.13

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Solution

The fourth proportional to 11,315.54, 15,615.80 and 6,280.13 is: 8,666.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.54 : 15,615.80 = 6,280.13 : x
  2. Step 2: Convert to fraction form
    11,315.54/15,615.80 = 6,280.13/x
  3. Step 3: Cross multiply
    11,315.54x = 15,615.80 × 6,280.13
  4. Step 4: Simplify right side
    11,315.54x = 98,069,144.57
  5. Step 5: Solve for x
    x = 98,069,144.57/11,315.54
  6. Step 6: Final answer
    x = 8,666.77

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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.