Home / 21,998.31-30,316.95-15,625.19

Finding the Fourth Proportional to 21,998.31, 30,316.95 and 15,625.19

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Solution

The fourth proportional to 21,998.31, 30,316.95 and 15,625.19 is: 21,533.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.31 : 30,316.95 = 15,625.19 : x
  2. Step 2: Convert to fraction form
    21,998.31/30,316.95 = 15,625.19/x
  3. Step 3: Cross multiply
    21,998.31x = 30,316.95 × 15,625.19
  4. Step 4: Simplify right side
    21,998.31x = 473,707,952.39
  5. Step 5: Solve for x
    x = 473,707,952.39/21,998.31
  6. Step 6: Final answer
    x = 21,533.83

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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.