Home / 11,185.50-15,436.02-6,405.51

Finding the Fourth Proportional to 11,185.50, 15,436.02 and 6,405.51

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Solution

The fourth proportional to 11,185.50, 15,436.02 and 6,405.51 is: 8,839.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,185.50 : 15,436.02 = 6,405.51 : x
  2. Step 2: Convert to fraction form
    11,185.50/15,436.02 = 6,405.51/x
  3. Step 3: Cross multiply
    11,185.50x = 15,436.02 × 6,405.51
  4. Step 4: Simplify right side
    11,185.50x = 98,875,580.47
  5. Step 5: Solve for x
    x = 98,875,580.47/11,185.50
  6. Step 6: Final answer
    x = 8,839.62

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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.