Home / 30,851.52-42,574.32-18,276

Finding the Fourth Proportional to 30,851.52, 42,574.32 and 18,276

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Solution

The fourth proportional to 30,851.52, 42,574.32 and 18,276 is: 25,220.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,851.52 : 42,574.32 = 18,276 : x
  2. Step 2: Convert to fraction form
    30,851.52/42,574.32 = 18,276/x
  3. Step 3: Cross multiply
    30,851.52x = 42,574.32 × 18,276
  4. Step 4: Simplify right side
    30,851.52x = 778,088,272.32
  5. Step 5: Solve for x
    x = 778,088,272.32/30,851.52
  6. Step 6: Final answer
    x = 25,220.42

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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.