Home / 20,129.04-27,777.95-11,054.52

Finding the Fourth Proportional to 20,129.04, 27,777.95 and 11,054.52

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Solution

The fourth proportional to 20,129.04, 27,777.95 and 11,054.52 is: 15,255.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.04 : 27,777.95 = 11,054.52 : x
  2. Step 2: Convert to fraction form
    20,129.04/27,777.95 = 11,054.52/x
  3. Step 3: Cross multiply
    20,129.04x = 27,777.95 × 11,054.52
  4. Step 4: Simplify right side
    20,129.04x = 307,071,903.83
  5. Step 5: Solve for x
    x = 307,071,903.83/20,129.04
  6. Step 6: Final answer
    x = 15,255.17

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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.