Home / 30,837.11-42,555.98-18,907.02

Finding the Fourth Proportional to 30,837.11, 42,555.98 and 18,907.02

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Solution

The fourth proportional to 30,837.11, 42,555.98 and 18,907.02 is: 26,092.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,837.11 : 42,555.98 = 18,907.02 : x
  2. Step 2: Convert to fraction form
    30,837.11/42,555.98 = 18,907.02/x
  3. Step 3: Cross multiply
    30,837.11x = 42,555.98 × 18,907.02
  4. Step 4: Simplify right side
    30,837.11x = 804,606,812.25
  5. Step 5: Solve for x
    x = 804,606,812.25/30,837.11
  6. Step 6: Final answer
    x = 26,092.16

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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.