Home / 39,070.12-53,917.02-21,165.11

Finding the Fourth Proportional to 39,070.12, 53,917.02 and 21,165.11

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Solution

The fourth proportional to 39,070.12, 53,917.02 and 21,165.11 is: 29,207.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,070.12 : 53,917.02 = 21,165.11 : x
  2. Step 2: Convert to fraction form
    39,070.12/53,917.02 = 21,165.11/x
  3. Step 3: Cross multiply
    39,070.12x = 53,917.02 × 21,165.11
  4. Step 4: Simplify right side
    39,070.12x = 1,141,159,659.17
  5. Step 5: Solve for x
    x = 1,141,159,659.17/39,070.12
  6. Step 6: Final answer
    x = 29,207.99

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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.