Home / 20,783.52-31,182.57-10,783.46

Finding the Fourth Proportional to 20,783.52, 31,182.57 and 10,783.46

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Solution

The fourth proportional to 20,783.52, 31,182.57 and 10,783.46 is: 16,178.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.52 : 31,182.57 = 10,783.46 : x
  2. Step 2: Convert to fraction form
    20,783.52/31,182.57 = 10,783.46/x
  3. Step 3: Cross multiply
    20,783.52x = 31,182.57 × 10,783.46
  4. Step 4: Simplify right side
    20,783.52x = 336,256,074.25
  5. Step 5: Solve for x
    x = 336,256,074.25/20,783.52
  6. Step 6: Final answer
    x = 16,178.98

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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.