Home / 38,421.60-53,027.64-27,807.36

Finding the Fourth Proportional to 38,421.60, 53,027.64 and 27,807.36

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Solution

The fourth proportional to 38,421.60, 53,027.64 and 27,807.36 is: 38,378.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.60 : 53,027.64 = 27,807.36 : x
  2. Step 2: Convert to fraction form
    38,421.60/53,027.64 = 27,807.36/x
  3. Step 3: Cross multiply
    38,421.60x = 53,027.64 × 27,807.36
  4. Step 4: Simplify right side
    38,421.60x = 1,474,558,675.43
  5. Step 5: Solve for x
    x = 1,474,558,675.43/38,421.60
  6. Step 6: Final answer
    x = 38,378.38

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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.