Home / 39,070.40-53,917.40-21,165.39

Finding the Fourth Proportional to 39,070.40, 53,917.40 and 21,165.39

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Solution

The fourth proportional to 39,070.40, 53,917.40 and 21,165.39 is: 29,208.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,070.40 : 53,917.40 = 21,165.39 : x
  2. Step 2: Convert to fraction form
    39,070.40/53,917.40 = 21,165.39/x
  3. Step 3: Cross multiply
    39,070.40x = 53,917.40 × 21,165.39
  4. Step 4: Simplify right side
    39,070.40x = 1,141,182,423.37
  5. Step 5: Solve for x
    x = 1,141,182,423.37/39,070.40
  6. Step 6: Final answer
    x = 29,208.36

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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.