Home / 28,014.25-38,660.48-15,439.81

Finding the Fourth Proportional to 28,014.25, 38,660.48 and 15,439.81

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Solution

The fourth proportional to 28,014.25, 38,660.48 and 15,439.81 is: 21,307.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014.25 : 38,660.48 = 15,439.81 : x
  2. Step 2: Convert to fraction form
    28,014.25/38,660.48 = 15,439.81/x
  3. Step 3: Cross multiply
    28,014.25x = 38,660.48 × 15,439.81
  4. Step 4: Simplify right side
    28,014.25x = 596,910,465.71
  5. Step 5: Solve for x
    x = 596,910,465.71/28,014.25
  6. Step 6: Final answer
    x = 21,307.39

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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.