Home / 13,388.24-18,475.47-7,419.98

Finding the Fourth Proportional to 13,388.24, 18,475.47 and 7,419.98

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Solution

The fourth proportional to 13,388.24, 18,475.47 and 7,419.98 is: 10,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.24 : 18,475.47 = 7,419.98 : x
  2. Step 2: Convert to fraction form
    13,388.24/18,475.47 = 7,419.98/x
  3. Step 3: Cross multiply
    13,388.24x = 18,475.47 × 7,419.98
  4. Step 4: Simplify right side
    13,388.24x = 137,087,525.51
  5. Step 5: Solve for x
    x = 137,087,525.51/13,388.24
  6. Step 6: Final answer
    x = 10,239.40

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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.