Home / 19,875.23-27,421.83-11,914.55

Finding the Fourth Proportional to 19,875.23, 27,421.83 and 11,914.55

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Solution

The fourth proportional to 19,875.23, 27,421.83 and 11,914.55 is: 16,438.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,875.23 : 27,421.83 = 11,914.55 : x
  2. Step 2: Convert to fraction form
    19,875.23/27,421.83 = 11,914.55/x
  3. Step 3: Cross multiply
    19,875.23x = 27,421.83 × 11,914.55
  4. Step 4: Simplify right side
    19,875.23x = 326,718,627.52
  5. Step 5: Solve for x
    x = 326,718,627.52/19,875.23
  6. Step 6: Final answer
    x = 16,438.49

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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.