Home / 28,205.50-38,924.40-15,631.06

Finding the Fourth Proportional to 28,205.50, 38,924.40 and 15,631.06

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Solution

The fourth proportional to 28,205.50, 38,924.40 and 15,631.06 is: 21,571.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205.50 : 38,924.40 = 15,631.06 : x
  2. Step 2: Convert to fraction form
    28,205.50/38,924.40 = 15,631.06/x
  3. Step 3: Cross multiply
    28,205.50x = 38,924.40 × 15,631.06
  4. Step 4: Simplify right side
    28,205.50x = 608,429,631.86
  5. Step 5: Solve for x
    x = 608,429,631.86/28,205.50
  6. Step 6: Final answer
    x = 21,571.31

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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.