Home / 30,470.10-42,066.90-19,149.18

Finding the Fourth Proportional to 30,470.10, 42,066.90 and 19,149.18

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Solution

The fourth proportional to 30,470.10, 42,066.90 and 19,149.18 is: 26,437.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,470.10 : 42,066.90 = 19,149.18 : x
  2. Step 2: Convert to fraction form
    30,470.10/42,066.90 = 19,149.18/x
  3. Step 3: Cross multiply
    30,470.10x = 42,066.90 × 19,149.18
  4. Step 4: Simplify right side
    30,470.10x = 805,546,640.14
  5. Step 5: Solve for x
    x = 805,546,640.14/30,470.10
  6. Step 6: Final answer
    x = 26,437.28

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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.