Home / 13,443.10-18,549.80-7,474.01

Finding the Fourth Proportional to 13,443.10, 18,549.80 and 7,474.01

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Solution

The fourth proportional to 13,443.10, 18,549.80 and 7,474.01 is: 10,313.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.10 : 18,549.80 = 7,474.01 : x
  2. Step 2: Convert to fraction form
    13,443.10/18,549.80 = 7,474.01/x
  3. Step 3: Cross multiply
    13,443.10x = 18,549.80 × 7,474.01
  4. Step 4: Simplify right side
    13,443.10x = 138,641,260.58
  5. Step 5: Solve for x
    x = 138,641,260.58/13,443.10
  6. Step 6: Final answer
    x = 10,313.19

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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.