Home / 28,653.90-42,980.66-15,589.31

Finding the Fourth Proportional to 28,653.90, 42,980.66 and 15,589.31

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Solution

The fourth proportional to 28,653.90, 42,980.66 and 15,589.31 is: 23,383.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,653.90 : 42,980.66 = 15,589.31 : x
  2. Step 2: Convert to fraction form
    28,653.90/42,980.66 = 15,589.31/x
  3. Step 3: Cross multiply
    28,653.90x = 42,980.66 × 15,589.31
  4. Step 4: Simplify right side
    28,653.90x = 670,038,832.74
  5. Step 5: Solve for x
    x = 670,038,832.74/28,653.90
  6. Step 6: Final answer
    x = 23,383.86

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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.