Home / 39,070.89-53,917.65-21,165.84

Finding the Fourth Proportional to 39,070.89, 53,917.65 and 21,165.84

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Solution

The fourth proportional to 39,070.89, 53,917.65 and 21,165.84 is: 29,208.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,070.89 : 53,917.65 = 21,165.84 : x
  2. Step 2: Convert to fraction form
    39,070.89/53,917.65 = 21,165.84/x
  3. Step 3: Cross multiply
    39,070.89x = 53,917.65 × 21,165.84
  4. Step 4: Simplify right side
    39,070.89x = 1,141,212,353.08
  5. Step 5: Solve for x
    x = 1,141,212,353.08/39,070.89
  6. Step 6: Final answer
    x = 29,208.76

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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.