Home / 30,687.58-42,348.93-17,258.87

Finding the Fourth Proportional to 30,687.58, 42,348.93 and 17,258.87

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Solution

The fourth proportional to 30,687.58, 42,348.93 and 17,258.87 is: 23,817.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,687.58 : 42,348.93 = 17,258.87 : x
  2. Step 2: Convert to fraction form
    30,687.58/42,348.93 = 17,258.87/x
  3. Step 3: Cross multiply
    30,687.58x = 42,348.93 × 17,258.87
  4. Step 4: Simplify right side
    30,687.58x = 730,894,677.51
  5. Step 5: Solve for x
    x = 730,894,677.51/30,687.58
  6. Step 6: Final answer
    x = 23,817.28

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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.