Home / 13,915.68-20,876.72-6,125.08

Finding the Fourth Proportional to 13,915.68, 20,876.72 and 6,125.08

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Solution

The fourth proportional to 13,915.68, 20,876.72 and 6,125.08 is: 9,189.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.68 : 20,876.72 = 6,125.08 : x
  2. Step 2: Convert to fraction form
    13,915.68/20,876.72 = 6,125.08/x
  3. Step 3: Cross multiply
    13,915.68x = 20,876.72 × 6,125.08
  4. Step 4: Simplify right side
    13,915.68x = 127,871,580.14
  5. Step 5: Solve for x
    x = 127,871,580.14/13,915.68
  6. Step 6: Final answer
    x = 9,189.03

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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.