Home / 28,622.80-39,501.44-15,877.20

Finding the Fourth Proportional to 28,622.80, 39,501.44 and 15,877.20

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Solution

The fourth proportional to 28,622.80, 39,501.44 and 15,877.20 is: 21,911.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,622.80 : 39,501.44 = 15,877.20 : x
  2. Step 2: Convert to fraction form
    28,622.80/39,501.44 = 15,877.20/x
  3. Step 3: Cross multiply
    28,622.80x = 39,501.44 × 15,877.20
  4. Step 4: Simplify right side
    28,622.80x = 627,172,263.17
  5. Step 5: Solve for x
    x = 627,172,263.17/28,622.80
  6. Step 6: Final answer
    x = 21,911.63

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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.