Home / 20,347.47-30,518.03-5,557.55

Finding the Fourth Proportional to 20,347.47, 30,518.03 and 5,557.55

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Solution

The fourth proportional to 20,347.47, 30,518.03 and 5,557.55 is: 8,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.47 : 30,518.03 = 5,557.55 : x
  2. Step 2: Convert to fraction form
    20,347.47/30,518.03 = 5,557.55/x
  3. Step 3: Cross multiply
    20,347.47x = 30,518.03 × 5,557.55
  4. Step 4: Simplify right side
    20,347.47x = 169,605,338.93
  5. Step 5: Solve for x
    x = 169,605,338.93/20,347.47
  6. Step 6: Final answer
    x = 8,335.45

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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.