Home / 30,440.16-42,034.14-19,129.25

Finding the Fourth Proportional to 30,440.16, 42,034.14 and 19,129.25

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Solution

The fourth proportional to 30,440.16, 42,034.14 and 19,129.25 is: 26,415.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.16 : 42,034.14 = 19,129.25 : x
  2. Step 2: Convert to fraction form
    30,440.16/42,034.14 = 19,129.25/x
  3. Step 3: Cross multiply
    30,440.16x = 42,034.14 × 19,129.25
  4. Step 4: Simplify right side
    30,440.16x = 804,081,677.68
  5. Step 5: Solve for x
    x = 804,081,677.68/30,440.16
  6. Step 6: Final answer
    x = 26,415.16

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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.