Home / 28,555.68-39,380.46-19,587.36

Finding the Fourth Proportional to 28,555.68, 39,380.46 and 19,587.36

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Solution

The fourth proportional to 28,555.68, 39,380.46 and 19,587.36 is: 27,012.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.68 : 39,380.46 = 19,587.36 : x
  2. Step 2: Convert to fraction form
    28,555.68/39,380.46 = 19,587.36/x
  3. Step 3: Cross multiply
    28,555.68x = 39,380.46 × 19,587.36
  4. Step 4: Simplify right side
    28,555.68x = 771,359,246.99
  5. Step 5: Solve for x
    x = 771,359,246.99/28,555.68
  6. Step 6: Final answer
    x = 27,012.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.