Home / 30,785.16-42,487.47-18,851.43

Finding the Fourth Proportional to 30,785.16, 42,487.47 and 18,851.43

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Solution

The fourth proportional to 30,785.16, 42,487.47 and 18,851.43 is: 26,017.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,785.16 : 42,487.47 = 18,851.43 : x
  2. Step 2: Convert to fraction form
    30,785.16/42,487.47 = 18,851.43/x
  3. Step 3: Cross multiply
    30,785.16x = 42,487.47 × 18,851.43
  4. Step 4: Simplify right side
    30,785.16x = 800,949,566.58
  5. Step 5: Solve for x
    x = 800,949,566.58/30,785.16
  6. Step 6: Final answer
    x = 26,017.39

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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.