Home / 28,264.49-39,003.05-15,688.25

Finding the Fourth Proportional to 28,264.49, 39,003.05 and 15,688.25

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Solution

The fourth proportional to 28,264.49, 39,003.05 and 15,688.25 is: 21,648.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,264.49 : 39,003.05 = 15,688.25 : x
  2. Step 2: Convert to fraction form
    28,264.49/39,003.05 = 15,688.25/x
  3. Step 3: Cross multiply
    28,264.49x = 39,003.05 × 15,688.25
  4. Step 4: Simplify right side
    28,264.49x = 611,889,520.72
  5. Step 5: Solve for x
    x = 611,889,520.72/28,264.49
  6. Step 6: Final answer
    x = 21,648.70

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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.