Home / 19,479.60-29,219.40-7,801.20

Finding the Fourth Proportional to 19,479.60, 29,219.40 and 7,801.20

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Solution

The fourth proportional to 19,479.60, 29,219.40 and 7,801.20 is: 11,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.60 : 29,219.40 = 7,801.20 : x
  2. Step 2: Convert to fraction form
    19,479.60/29,219.40 = 7,801.20/x
  3. Step 3: Cross multiply
    19,479.60x = 29,219.40 × 7,801.20
  4. Step 4: Simplify right side
    19,479.60x = 227,946,383.28
  5. Step 5: Solve for x
    x = 227,946,383.28/19,479.60
  6. Step 6: Final answer
    x = 11,701.80

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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.