Home / 12,421.67-17,140.86-7,316.37

Finding the Fourth Proportional to 12,421.67, 17,140.86 and 7,316.37

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Solution

The fourth proportional to 12,421.67, 17,140.86 and 7,316.37 is: 10,095.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.67 : 17,140.86 = 7,316.37 : x
  2. Step 2: Convert to fraction form
    12,421.67/17,140.86 = 7,316.37/x
  3. Step 3: Cross multiply
    12,421.67x = 17,140.86 × 7,316.37
  4. Step 4: Simplify right side
    12,421.67x = 125,408,873.88
  5. Step 5: Solve for x
    x = 125,408,873.88/12,421.67
  6. Step 6: Final answer
    x = 10,095.98

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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.