Home / 35,505.80-49,000.38-20,403.36

Finding the Fourth Proportional to 35,505.80, 49,000.38 and 20,403.36

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Solution

The fourth proportional to 35,505.80, 49,000.38 and 20,403.36 is: 28,158.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,505.80 : 49,000.38 = 20,403.36 : x
  2. Step 2: Convert to fraction form
    35,505.80/49,000.38 = 20,403.36/x
  3. Step 3: Cross multiply
    35,505.80x = 49,000.38 × 20,403.36
  4. Step 4: Simplify right side
    35,505.80x = 999,772,393.28
  5. Step 5: Solve for x
    x = 999,772,393.28/35,505.80
  6. Step 6: Final answer
    x = 28,158.00

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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.