Home / 28,367.10-39,145.02-15,619.76

Finding the Fourth Proportional to 28,367.10, 39,145.02 and 15,619.76

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Solution

The fourth proportional to 28,367.10, 39,145.02 and 15,619.76 is: 21,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,367.10 : 39,145.02 = 15,619.76 : x
  2. Step 2: Convert to fraction form
    28,367.10/39,145.02 = 15,619.76/x
  3. Step 3: Cross multiply
    28,367.10x = 39,145.02 × 15,619.76
  4. Step 4: Simplify right side
    28,367.10x = 611,435,817.60
  5. Step 5: Solve for x
    x = 611,435,817.60/28,367.10
  6. Step 6: Final answer
    x = 21,554.40

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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.