Home / 30,686.58-42,347.55-17,257.87

Finding the Fourth Proportional to 30,686.58, 42,347.55 and 17,257.87

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Solution

The fourth proportional to 30,686.58, 42,347.55 and 17,257.87 is: 23,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,686.58 : 42,347.55 = 17,257.87 : x
  2. Step 2: Convert to fraction form
    30,686.58/42,347.55 = 17,257.87/x
  3. Step 3: Cross multiply
    30,686.58x = 42,347.55 × 17,257.87
  4. Step 4: Simplify right side
    30,686.58x = 730,828,512.72
  5. Step 5: Solve for x
    x = 730,828,512.72/30,686.58
  6. Step 6: Final answer
    x = 23,815.90

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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.