Home / 19,617.71-29,417.34-7,128.92

Finding the Fourth Proportional to 19,617.71, 29,417.34 and 7,128.92

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Solution

The fourth proportional to 19,617.71, 29,417.34 and 7,128.92 is: 10,690.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,617.71 : 29,417.34 = 7,128.92 : x
  2. Step 2: Convert to fraction form
    19,617.71/29,417.34 = 7,128.92/x
  3. Step 3: Cross multiply
    19,617.71x = 29,417.34 × 7,128.92
  4. Step 4: Simplify right side
    19,617.71x = 209,713,963.75
  5. Step 5: Solve for x
    x = 209,713,963.75/19,617.71
  6. Step 6: Final answer
    x = 10,690.04

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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.