Home / 19,721.60-29,575.20-6,574.40

Finding the Fourth Proportional to 19,721.60, 29,575.20 and 6,574.40

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Solution

The fourth proportional to 19,721.60, 29,575.20 and 6,574.40 is: 9,859.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.60 : 29,575.20 = 6,574.40 : x
  2. Step 2: Convert to fraction form
    19,721.60/29,575.20 = 6,574.40/x
  3. Step 3: Cross multiply
    19,721.60x = 29,575.20 × 6,574.40
  4. Step 4: Simplify right side
    19,721.60x = 194,439,194.88
  5. Step 5: Solve for x
    x = 194,439,194.88/19,721.60
  6. Step 6: Final answer
    x = 9,859.20

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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.