Home / 30,783.90-42,479.22-17,358.48

Finding the Fourth Proportional to 30,783.90, 42,479.22 and 17,358.48

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Solution

The fourth proportional to 30,783.90, 42,479.22 and 17,358.48 is: 23,953.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,783.90 : 42,479.22 = 17,358.48 : x
  2. Step 2: Convert to fraction form
    30,783.90/42,479.22 = 17,358.48/x
  3. Step 3: Cross multiply
    30,783.90x = 42,479.22 × 17,358.48
  4. Step 4: Simplify right side
    30,783.90x = 737,374,690.79
  5. Step 5: Solve for x
    x = 737,374,690.79/30,783.90
  6. Step 6: Final answer
    x = 23,953.26

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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.