Home / 13,374.48-18,455.28-7,405.32

Finding the Fourth Proportional to 13,374.48, 18,455.28 and 7,405.32

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Solution

The fourth proportional to 13,374.48, 18,455.28 and 7,405.32 is: 10,218.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,374.48 : 18,455.28 = 7,405.32 : x
  2. Step 2: Convert to fraction form
    13,374.48/18,455.28 = 7,405.32/x
  3. Step 3: Cross multiply
    13,374.48x = 18,455.28 × 7,405.32
  4. Step 4: Simplify right side
    13,374.48x = 136,667,254.09
  5. Step 5: Solve for x
    x = 136,667,254.09/13,374.48
  6. Step 6: Final answer
    x = 10,218.51

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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.