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Finding the Fourth Proportional to 35,798.94, 49,396.77 and 20,689.20

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Solution

The fourth proportional to 35,798.94, 49,396.77 and 20,689.20 is: 28,547.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,798.94 : 49,396.77 = 20,689.20 : x
  2. Step 2: Convert to fraction form
    35,798.94/49,396.77 = 20,689.20/x
  3. Step 3: Cross multiply
    35,798.94x = 49,396.77 × 20,689.20
  4. Step 4: Simplify right side
    35,798.94x = 1,021,979,653.88
  5. Step 5: Solve for x
    x = 1,021,979,653.88/35,798.94
  6. Step 6: Final answer
    x = 28,547.76

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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.