Home / 28,237.64-42,370.26-19,970.78

Finding the Fourth Proportional to 28,237.64, 42,370.26 and 19,970.78

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Solution

The fourth proportional to 28,237.64, 42,370.26 and 19,970.78 is: 29,965.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.64 : 42,370.26 = 19,970.78 : x
  2. Step 2: Convert to fraction form
    28,237.64/42,370.26 = 19,970.78/x
  3. Step 3: Cross multiply
    28,237.64x = 42,370.26 × 19,970.78
  4. Step 4: Simplify right side
    28,237.64x = 846,167,141.00
  5. Step 5: Solve for x
    x = 846,167,141.00/28,237.64
  6. Step 6: Final answer
    x = 29,965.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.