Home / 19,618.60-29,427.84-7,931.77

Finding the Fourth Proportional to 19,618.60, 29,427.84 and 7,931.77

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Solution

The fourth proportional to 19,618.60, 29,427.84 and 7,931.77 is: 11,897.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,618.60 : 29,427.84 = 7,931.77 : x
  2. Step 2: Convert to fraction form
    19,618.60/29,427.84 = 7,931.77/x
  3. Step 3: Cross multiply
    19,618.60x = 29,427.84 × 7,931.77
  4. Step 4: Simplify right side
    19,618.60x = 233,414,858.48
  5. Step 5: Solve for x
    x = 233,414,858.48/19,618.60
  6. Step 6: Final answer
    x = 11,897.63

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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.