Home / 18,987.48-28,426.14-14,326.74

Finding the Fourth Proportional to 18,987.48, 28,426.14 and 14,326.74

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Solution

The fourth proportional to 18,987.48, 28,426.14 and 14,326.74 is: 21,448.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.48 : 28,426.14 = 14,326.74 : x
  2. Step 2: Convert to fraction form
    18,987.48/28,426.14 = 14,326.74/x
  3. Step 3: Cross multiply
    18,987.48x = 28,426.14 × 14,326.74
  4. Step 4: Simplify right side
    18,987.48x = 407,253,916.98
  5. Step 5: Solve for x
    x = 407,253,916.98/18,987.48
  6. Step 6: Final answer
    x = 21,448.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.