Home / 11,151.80-15,386.76-6,436.07

Finding the Fourth Proportional to 11,151.80, 15,386.76 and 6,436.07

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Solution

The fourth proportional to 11,151.80, 15,386.76 and 6,436.07 is: 8,880.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.80 : 15,386.76 = 6,436.07 : x
  2. Step 2: Convert to fraction form
    11,151.80/15,386.76 = 6,436.07/x
  3. Step 3: Cross multiply
    11,151.80x = 15,386.76 × 6,436.07
  4. Step 4: Simplify right side
    11,151.80x = 99,030,187.50
  5. Step 5: Solve for x
    x = 99,030,187.50/11,151.80
  6. Step 6: Final answer
    x = 8,880.20

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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.