Home / 13,436.58-18,541.01-7,770.48

Finding the Fourth Proportional to 13,436.58, 18,541.01 and 7,770.48

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Solution

The fourth proportional to 13,436.58, 18,541.01 and 7,770.48 is: 10,722.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.58 : 18,541.01 = 7,770.48 : x
  2. Step 2: Convert to fraction form
    13,436.58/18,541.01 = 7,770.48/x
  3. Step 3: Cross multiply
    13,436.58x = 18,541.01 × 7,770.48
  4. Step 4: Simplify right side
    13,436.58x = 144,072,508.53
  5. Step 5: Solve for x
    x = 144,072,508.53/13,436.58
  6. Step 6: Final answer
    x = 10,722.41

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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.