Home / 34,358.68-47,406.78-20,929.72

Finding the Fourth Proportional to 34,358.68, 47,406.78 and 20,929.72

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Solution

The fourth proportional to 34,358.68, 47,406.78 and 20,929.72 is: 28,878.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,358.68 : 47,406.78 = 20,929.72 : x
  2. Step 2: Convert to fraction form
    34,358.68/47,406.78 = 20,929.72/x
  3. Step 3: Cross multiply
    34,358.68x = 47,406.78 × 20,929.72
  4. Step 4: Simplify right side
    34,358.68x = 992,210,631.50
  5. Step 5: Solve for x
    x = 992,210,631.50/34,358.68
  6. Step 6: Final answer
    x = 28,878.02

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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.