Home / 15,417.70-21,276.40-8,344.10

Finding the Fourth Proportional to 15,417.70, 21,276.40 and 8,344.10

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Solution

The fourth proportional to 15,417.70, 21,276.40 and 8,344.10 is: 11,514.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.70 : 21,276.40 = 8,344.10 : x
  2. Step 2: Convert to fraction form
    15,417.70/21,276.40 = 8,344.10/x
  3. Step 3: Cross multiply
    15,417.70x = 21,276.40 × 8,344.10
  4. Step 4: Simplify right side
    15,417.70x = 177,532,409.24
  5. Step 5: Solve for x
    x = 177,532,409.24/15,417.70
  6. Step 6: Final answer
    x = 11,514.84

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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.