Home / 19,606.40-29,406.60-6,458.80

Finding the Fourth Proportional to 19,606.40, 29,406.60 and 6,458.80

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Solution

The fourth proportional to 19,606.40, 29,406.60 and 6,458.80 is: 9,687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,606.40 : 29,406.60 = 6,458.80 : x
  2. Step 2: Convert to fraction form
    19,606.40/29,406.60 = 6,458.80/x
  3. Step 3: Cross multiply
    19,606.40x = 29,406.60 × 6,458.80
  4. Step 4: Simplify right side
    19,606.40x = 189,931,348.08
  5. Step 5: Solve for x
    x = 189,931,348.08/19,606.40
  6. Step 6: Final answer
    x = 9,687.21

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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.