Home / 20,904.08-31,340.93-9,805.05

Finding the Fourth Proportional to 20,904.08, 31,340.93 and 9,805.05

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Solution

The fourth proportional to 20,904.08, 31,340.93 and 9,805.05 is: 14,700.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.08 : 31,340.93 = 9,805.05 : x
  2. Step 2: Convert to fraction form
    20,904.08/31,340.93 = 9,805.05/x
  3. Step 3: Cross multiply
    20,904.08x = 31,340.93 × 9,805.05
  4. Step 4: Simplify right side
    20,904.08x = 307,299,336.67
  5. Step 5: Solve for x
    x = 307,299,336.67/20,904.08
  6. Step 6: Final answer
    x = 14,700.45

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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.