Home / 30,476.58-42,059.07-18,537.90

Finding the Fourth Proportional to 30,476.58, 42,059.07 and 18,537.90

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Solution

The fourth proportional to 30,476.58, 42,059.07 and 18,537.90 is: 25,583.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,476.58 : 42,059.07 = 18,537.90 : x
  2. Step 2: Convert to fraction form
    30,476.58/42,059.07 = 18,537.90/x
  3. Step 3: Cross multiply
    30,476.58x = 42,059.07 × 18,537.90
  4. Step 4: Simplify right side
    30,476.58x = 779,686,833.75
  5. Step 5: Solve for x
    x = 779,686,833.75/30,476.58
  6. Step 6: Final answer
    x = 25,583.15

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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.