Home / 30,606.76-42,229.54-18,669.32

Finding the Fourth Proportional to 30,606.76, 42,229.54 and 18,669.32

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Solution

The fourth proportional to 30,606.76, 42,229.54 and 18,669.32 is: 25,758.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,606.76 : 42,229.54 = 18,669.32 : x
  2. Step 2: Convert to fraction form
    30,606.76/42,229.54 = 18,669.32/x
  3. Step 3: Cross multiply
    30,606.76x = 42,229.54 × 18,669.32
  4. Step 4: Simplify right side
    30,606.76x = 788,396,795.71
  5. Step 5: Solve for x
    x = 788,396,795.71/30,606.76
  6. Step 6: Final answer
    x = 25,758.91

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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.