Home / 39,709.08-54,800.52-21,803.88

Finding the Fourth Proportional to 39,709.08, 54,800.52 and 21,803.88

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Solution

The fourth proportional to 39,709.08, 54,800.52 and 21,803.88 is: 30,090.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,709.08 : 54,800.52 = 21,803.88 : x
  2. Step 2: Convert to fraction form
    39,709.08/54,800.52 = 21,803.88/x
  3. Step 3: Cross multiply
    39,709.08x = 54,800.52 × 21,803.88
  4. Step 4: Simplify right side
    39,709.08x = 1,194,863,962.02
  5. Step 5: Solve for x
    x = 1,194,863,962.02/39,709.08
  6. Step 6: Final answer
    x = 30,090.45

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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.