Home / 28,288.53-39,038.03-15,367.71

Finding the Fourth Proportional to 28,288.53, 39,038.03 and 15,367.71

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Solution

The fourth proportional to 28,288.53, 39,038.03 and 15,367.71 is: 21,207.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.53 : 39,038.03 = 15,367.71 : x
  2. Step 2: Convert to fraction form
    28,288.53/39,038.03 = 15,367.71/x
  3. Step 3: Cross multiply
    28,288.53x = 39,038.03 × 15,367.71
  4. Step 4: Simplify right side
    28,288.53x = 599,925,047.17
  5. Step 5: Solve for x
    x = 599,925,047.17/28,288.53
  6. Step 6: Final answer
    x = 21,207.36

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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.