Home / 15,417.87-21,276.57-8,344.29

Finding the Fourth Proportional to 15,417.87, 21,276.57 and 8,344.29

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Solution

The fourth proportional to 15,417.87, 21,276.57 and 8,344.29 is: 11,515.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.87 : 21,276.57 = 8,344.29 : x
  2. Step 2: Convert to fraction form
    15,417.87/21,276.57 = 8,344.29/x
  3. Step 3: Cross multiply
    15,417.87x = 21,276.57 × 8,344.29
  4. Step 4: Simplify right side
    15,417.87x = 177,537,870.29
  5. Step 5: Solve for x
    x = 177,537,870.29/15,417.87
  6. Step 6: Final answer
    x = 11,515.07

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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.