Home / 19,927.81-27,507.61-13,215.69

Finding the Fourth Proportional to 19,927.81, 27,507.61 and 13,215.69

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Solution

The fourth proportional to 19,927.81, 27,507.61 and 13,215.69 is: 18,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,927.81 : 27,507.61 = 13,215.69 : x
  2. Step 2: Convert to fraction form
    19,927.81/27,507.61 = 13,215.69/x
  3. Step 3: Cross multiply
    19,927.81x = 27,507.61 × 13,215.69
  4. Step 4: Simplify right side
    19,927.81x = 363,532,046.40
  5. Step 5: Solve for x
    x = 363,532,046.40/19,927.81
  6. Step 6: Final answer
    x = 18,242.45

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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.