Home / 19,926.81-27,510.44-13,221.63

Finding the Fourth Proportional to 19,926.81, 27,510.44 and 13,221.63

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Solution

The fourth proportional to 19,926.81, 27,510.44 and 13,221.63 is: 18,253.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,926.81 : 27,510.44 = 13,221.63 : x
  2. Step 2: Convert to fraction form
    19,926.81/27,510.44 = 13,221.63/x
  3. Step 3: Cross multiply
    19,926.81x = 27,510.44 × 13,221.63
  4. Step 4: Simplify right side
    19,926.81x = 363,732,792.71
  5. Step 5: Solve for x
    x = 363,732,792.71/19,926.81
  6. Step 6: Final answer
    x = 18,253.44

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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.