Home / 20,208.84-30,315.69-10,345.47

Finding the Fourth Proportional to 20,208.84, 30,315.69 and 10,345.47

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Solution

The fourth proportional to 20,208.84, 30,315.69 and 10,345.47 is: 15,519.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.84 : 30,315.69 = 10,345.47 : x
  2. Step 2: Convert to fraction form
    20,208.84/30,315.69 = 10,345.47/x
  3. Step 3: Cross multiply
    20,208.84x = 30,315.69 × 10,345.47
  4. Step 4: Simplify right side
    20,208.84x = 313,630,061.42
  5. Step 5: Solve for x
    x = 313,630,061.42/20,208.84
  6. Step 6: Final answer
    x = 15,519.45

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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.