Home / 30,687.74-42,346.08-17,258.70

Finding the Fourth Proportional to 30,687.74, 42,346.08 and 17,258.70

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Solution

The fourth proportional to 30,687.74, 42,346.08 and 17,258.70 is: 23,815.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,687.74 : 42,346.08 = 17,258.70 : x
  2. Step 2: Convert to fraction form
    30,687.74/42,346.08 = 17,258.70/x
  3. Step 3: Cross multiply
    30,687.74x = 42,346.08 × 17,258.70
  4. Step 4: Simplify right side
    30,687.74x = 730,838,390.71
  5. Step 5: Solve for x
    x = 730,838,390.71/30,687.74
  6. Step 6: Final answer
    x = 23,815.32

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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.