Home / 20,975.31-28,883.52-20,509.74

Finding the Fourth Proportional to 20,975.31, 28,883.52 and 20,509.74

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Solution

The fourth proportional to 20,975.31, 28,883.52 and 20,509.74 is: 28,242.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.31 : 28,883.52 = 20,509.74 : x
  2. Step 2: Convert to fraction form
    20,975.31/28,883.52 = 20,509.74/x
  3. Step 3: Cross multiply
    20,975.31x = 28,883.52 × 20,509.74
  4. Step 4: Simplify right side
    20,975.31x = 592,393,485.48
  5. Step 5: Solve for x
    x = 592,393,485.48/20,975.31
  6. Step 6: Final answer
    x = 28,242.42

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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.