Home / 20,208.89-30,314.15-10,345.52

Finding the Fourth Proportional to 20,208.89, 30,314.15 and 10,345.52

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Solution

The fourth proportional to 20,208.89, 30,314.15 and 10,345.52 is: 15,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.89 : 30,314.15 = 10,345.52 : x
  2. Step 2: Convert to fraction form
    20,208.89/30,314.15 = 10,345.52/x
  3. Step 3: Cross multiply
    20,208.89x = 30,314.15 × 10,345.52
  4. Step 4: Simplify right side
    20,208.89x = 313,615,645.11
  5. Step 5: Solve for x
    x = 313,615,645.11/20,208.89
  6. Step 6: Final answer
    x = 15,518.70

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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.