Home / 39,077.61-53,927.15-21,172.61

Finding the Fourth Proportional to 39,077.61, 53,927.15 and 21,172.61

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Solution

The fourth proportional to 39,077.61, 53,927.15 and 21,172.61 is: 29,218.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,077.61 : 53,927.15 = 21,172.61 : x
  2. Step 2: Convert to fraction form
    39,077.61/53,927.15 = 21,172.61/x
  3. Step 3: Cross multiply
    39,077.61x = 53,927.15 × 21,172.61
  4. Step 4: Simplify right side
    39,077.61x = 1,141,778,360.07
  5. Step 5: Solve for x
    x = 1,141,778,360.07/39,077.61
  6. Step 6: Final answer
    x = 29,218.23

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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.