Home / 10,301.40-15,415.11-8,919.45

Finding the Fourth Proportional to 10,301.40, 15,415.11 and 8,919.45

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Solution

The fourth proportional to 10,301.40, 15,415.11 and 8,919.45 is: 13,347.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,301.40 : 15,415.11 = 8,919.45 : x
  2. Step 2: Convert to fraction form
    10,301.40/15,415.11 = 8,919.45/x
  3. Step 3: Cross multiply
    10,301.40x = 15,415.11 × 8,919.45
  4. Step 4: Simplify right side
    10,301.40x = 137,494,302.89
  5. Step 5: Solve for x
    x = 137,494,302.89/10,301.40
  6. Step 6: Final answer
    x = 13,347.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.