Home / 19,588.80-29,390.40-7,903.20

Finding the Fourth Proportional to 19,588.80, 29,390.40 and 7,903.20

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Solution

The fourth proportional to 19,588.80, 29,390.40 and 7,903.20 is: 11,857.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,588.80 : 29,390.40 = 7,903.20 : x
  2. Step 2: Convert to fraction form
    19,588.80/29,390.40 = 7,903.20/x
  3. Step 3: Cross multiply
    19,588.80x = 29,390.40 × 7,903.20
  4. Step 4: Simplify right side
    19,588.80x = 232,278,209.28
  5. Step 5: Solve for x
    x = 232,278,209.28/19,588.80
  6. Step 6: Final answer
    x = 11,857.70

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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.