Home / 30,634.79-42,279.93-18,695.60

Finding the Fourth Proportional to 30,634.79, 42,279.93 and 18,695.60

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Solution

The fourth proportional to 30,634.79, 42,279.93 and 18,695.60 is: 25,802.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,634.79 : 42,279.93 = 18,695.60 : x
  2. Step 2: Convert to fraction form
    30,634.79/42,279.93 = 18,695.60/x
  3. Step 3: Cross multiply
    30,634.79x = 42,279.93 × 18,695.60
  4. Step 4: Simplify right side
    30,634.79x = 790,448,659.31
  5. Step 5: Solve for x
    x = 790,448,659.31/30,634.79
  6. Step 6: Final answer
    x = 25,802.32

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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.