Home / 28,207.48-38,925.66-15,631.96

Finding the Fourth Proportional to 28,207.48, 38,925.66 and 15,631.96

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Solution

The fourth proportional to 28,207.48, 38,925.66 and 15,631.96 is: 21,571.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,207.48 : 38,925.66 = 15,631.96 : x
  2. Step 2: Convert to fraction form
    28,207.48/38,925.66 = 15,631.96/x
  3. Step 3: Cross multiply
    28,207.48x = 38,925.66 × 15,631.96
  4. Step 4: Simplify right side
    28,207.48x = 608,484,360.09
  5. Step 5: Solve for x
    x = 608,484,360.09/28,207.48
  6. Step 6: Final answer
    x = 21,571.74

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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.