Home / 30,637.76-42,272.32-18,700.32

Finding the Fourth Proportional to 30,637.76, 42,272.32 and 18,700.32

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Solution

The fourth proportional to 30,637.76, 42,272.32 and 18,700.32 is: 25,801.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,637.76 : 42,272.32 = 18,700.32 : x
  2. Step 2: Convert to fraction form
    30,637.76/42,272.32 = 18,700.32/x
  3. Step 3: Cross multiply
    30,637.76x = 42,272.32 × 18,700.32
  4. Step 4: Simplify right side
    30,637.76x = 790,505,911.14
  5. Step 5: Solve for x
    x = 790,505,911.14/30,637.76
  6. Step 6: Final answer
    x = 25,801.69

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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.