Home / 28,621.36-39,499.77-15,875.80

Finding the Fourth Proportional to 28,621.36, 39,499.77 and 15,875.80

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Solution

The fourth proportional to 28,621.36, 39,499.77 and 15,875.80 is: 21,909.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.36 : 39,499.77 = 15,875.80 : x
  2. Step 2: Convert to fraction form
    28,621.36/39,499.77 = 15,875.80/x
  3. Step 3: Cross multiply
    28,621.36x = 39,499.77 × 15,875.80
  4. Step 4: Simplify right side
    28,621.36x = 627,090,448.57
  5. Step 5: Solve for x
    x = 627,090,448.57/28,621.36
  6. Step 6: Final answer
    x = 21,909.88

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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.