Home / 53,812.96-80,707.59-20,521.35

Finding the Fourth Proportional to 53,812.96, 80,707.59 and 20,521.35

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Solution

The fourth proportional to 53,812.96, 80,707.59 and 20,521.35 is: 30,777.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,812.96 : 80,707.59 = 20,521.35 : x
  2. Step 2: Convert to fraction form
    53,812.96/80,707.59 = 20,521.35/x
  3. Step 3: Cross multiply
    53,812.96x = 80,707.59 × 20,521.35
  4. Step 4: Simplify right side
    53,812.96x = 1,656,228,702.05
  5. Step 5: Solve for x
    x = 1,656,228,702.05/53,812.96
  6. Step 6: Final answer
    x = 30,777.51

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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.