Home / 15,357.61-21,196.40-9,617.72

Finding the Fourth Proportional to 15,357.61, 21,196.40 and 9,617.72

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Solution

The fourth proportional to 15,357.61, 21,196.40 and 9,617.72 is: 13,274.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,357.61 : 21,196.40 = 9,617.72 : x
  2. Step 2: Convert to fraction form
    15,357.61/21,196.40 = 9,617.72/x
  3. Step 3: Cross multiply
    15,357.61x = 21,196.40 × 9,617.72
  4. Step 4: Simplify right side
    15,357.61x = 203,861,040.21
  5. Step 5: Solve for x
    x = 203,861,040.21/15,357.61
  6. Step 6: Final answer
    x = 13,274.27

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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.