Home / 28,511.58-39,345.21-15,938.76

Finding the Fourth Proportional to 28,511.58, 39,345.21 and 15,938.76

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Solution

The fourth proportional to 28,511.58, 39,345.21 and 15,938.76 is: 21,995.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.58 : 39,345.21 = 15,938.76 : x
  2. Step 2: Convert to fraction form
    28,511.58/39,345.21 = 15,938.76/x
  3. Step 3: Cross multiply
    28,511.58x = 39,345.21 × 15,938.76
  4. Step 4: Simplify right side
    28,511.58x = 627,113,859.34
  5. Step 5: Solve for x
    x = 627,113,859.34/28,511.58
  6. Step 6: Final answer
    x = 21,995.06

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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.