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Finding the Fourth Proportional to 35,529.80, 53,313.90 and 15,811.40

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Solution

The fourth proportional to 35,529.80, 53,313.90 and 15,811.40 is: 23,725.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,529.80 : 53,313.90 = 15,811.40 : x
  2. Step 2: Convert to fraction form
    35,529.80/53,313.90 = 15,811.40/x
  3. Step 3: Cross multiply
    35,529.80x = 53,313.90 × 15,811.40
  4. Step 4: Simplify right side
    35,529.80x = 842,967,398.46
  5. Step 5: Solve for x
    x = 842,967,398.46/35,529.80
  6. Step 6: Final answer
    x = 23,725.64

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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.