Home / 35,515.60-49,009.86-20,397.62

Finding the Fourth Proportional to 35,515.60, 49,009.86 and 20,397.62

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Solution

The fourth proportional to 35,515.60, 49,009.86 and 20,397.62 is: 28,147.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,515.60 : 49,009.86 = 20,397.62 : x
  2. Step 2: Convert to fraction form
    35,515.60/49,009.86 = 20,397.62/x
  3. Step 3: Cross multiply
    35,515.60x = 49,009.86 × 20,397.62
  4. Step 4: Simplify right side
    35,515.60x = 999,684,623.06
  5. Step 5: Solve for x
    x = 999,684,623.06/35,515.60
  6. Step 6: Final answer
    x = 28,147.76

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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.