Home / 28,264.99-39,003.74-15,688.75

Finding the Fourth Proportional to 28,264.99, 39,003.74 and 15,688.75

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Solution

The fourth proportional to 28,264.99, 39,003.74 and 15,688.75 is: 21,649.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,264.99 : 39,003.74 = 15,688.75 : x
  2. Step 2: Convert to fraction form
    28,264.99/39,003.74 = 15,688.75/x
  3. Step 3: Cross multiply
    28,264.99x = 39,003.74 × 15,688.75
  4. Step 4: Simplify right side
    28,264.99x = 611,919,847.48
  5. Step 5: Solve for x
    x = 611,919,847.48/28,264.99
  6. Step 6: Final answer
    x = 21,649.39

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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.