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Finding the Fourth Proportional to 19,551.16, 29,109.20 and 19,275.12

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Solution

The fourth proportional to 19,551.16, 29,109.20 and 19,275.12 is: 28,698.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,551.16 : 29,109.20 = 19,275.12 : x
  2. Step 2: Convert to fraction form
    19,551.16/29,109.20 = 19,275.12/x
  3. Step 3: Cross multiply
    19,551.16x = 29,109.20 × 19,275.12
  4. Step 4: Simplify right side
    19,551.16x = 561,083,323.10
  5. Step 5: Solve for x
    x = 561,083,323.10/19,551.16
  6. Step 6: Final answer
    x = 28,698.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.