Home / 28,622.79-39,495.69-15,875.82

Finding the Fourth Proportional to 28,622.79, 39,495.69 and 15,875.82

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Solution

The fourth proportional to 28,622.79, 39,495.69 and 15,875.82 is: 21,906.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,622.79 : 39,495.69 = 15,875.82 : x
  2. Step 2: Convert to fraction form
    28,622.79/39,495.69 = 15,875.82/x
  3. Step 3: Cross multiply
    28,622.79x = 39,495.69 × 15,875.82
  4. Step 4: Simplify right side
    28,622.79x = 627,026,465.22
  5. Step 5: Solve for x
    x = 627,026,465.22/28,622.79
  6. Step 6: Final answer
    x = 21,906.55

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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.