Home / 19,327.20-29,000.40-7,640.80

Finding the Fourth Proportional to 19,327.20, 29,000.40 and 7,640.80

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Solution

The fourth proportional to 19,327.20, 29,000.40 and 7,640.80 is: 11,465.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,327.20 : 29,000.40 = 7,640.80 : x
  2. Step 2: Convert to fraction form
    19,327.20/29,000.40 = 7,640.80/x
  3. Step 3: Cross multiply
    19,327.20x = 29,000.40 × 7,640.80
  4. Step 4: Simplify right side
    19,327.20x = 221,586,256.32
  5. Step 5: Solve for x
    x = 221,586,256.32/19,327.20
  6. Step 6: Final answer
    x = 11,465.00

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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.