Home / 30,861.08-42,606.65-19,540.28

Finding the Fourth Proportional to 30,861.08, 42,606.65 and 19,540.28

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Solution

The fourth proportional to 30,861.08, 42,606.65 and 19,540.28 is: 26,977.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,861.08 : 42,606.65 = 19,540.28 : x
  2. Step 2: Convert to fraction form
    30,861.08/42,606.65 = 19,540.28/x
  3. Step 3: Cross multiply
    30,861.08x = 42,606.65 × 19,540.28
  4. Step 4: Simplify right side
    30,861.08x = 832,545,952.95
  5. Step 5: Solve for x
    x = 832,545,952.95/30,861.08
  6. Step 6: Final answer
    x = 26,977.21

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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.