Home / 19,520.40-29,345.40-16,669.20

Finding the Fourth Proportional to 19,520.40, 29,345.40 and 16,669.20

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Solution

The fourth proportional to 19,520.40, 29,345.40 and 16,669.20 is: 25,059.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,520.40 : 29,345.40 = 16,669.20 : x
  2. Step 2: Convert to fraction form
    19,520.40/29,345.40 = 16,669.20/x
  3. Step 3: Cross multiply
    19,520.40x = 29,345.40 × 16,669.20
  4. Step 4: Simplify right side
    19,520.40x = 489,164,341.68
  5. Step 5: Solve for x
    x = 489,164,341.68/19,520.40
  6. Step 6: Final answer
    x = 25,059.14

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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.