Home / 15,712.58-21,667.28-10,405.46

Finding the Fourth Proportional to 15,712.58, 21,667.28 and 10,405.46

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Solution

The fourth proportional to 15,712.58, 21,667.28 and 10,405.46 is: 14,348.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,712.58 : 21,667.28 = 10,405.46 : x
  2. Step 2: Convert to fraction form
    15,712.58/21,667.28 = 10,405.46/x
  3. Step 3: Cross multiply
    15,712.58x = 21,667.28 × 10,405.46
  4. Step 4: Simplify right side
    15,712.58x = 225,458,015.35
  5. Step 5: Solve for x
    x = 225,458,015.35/15,712.58
  6. Step 6: Final answer
    x = 14,348.89

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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.