Home / 19,718.64-29,560.68-7,415.28

Finding the Fourth Proportional to 19,718.64, 29,560.68 and 7,415.28

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Solution

The fourth proportional to 19,718.64, 29,560.68 and 7,415.28 is: 11,116.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,718.64 : 29,560.68 = 7,415.28 : x
  2. Step 2: Convert to fraction form
    19,718.64/29,560.68 = 7,415.28/x
  3. Step 3: Cross multiply
    19,718.64x = 29,560.68 × 7,415.28
  4. Step 4: Simplify right side
    19,718.64x = 219,200,719.19
  5. Step 5: Solve for x
    x = 219,200,719.19/19,718.64
  6. Step 6: Final answer
    x = 11,116.42

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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.