Home / 18,988.16-28,455.49-14,528.57

Finding the Fourth Proportional to 18,988.16, 28,455.49 and 14,528.57

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Solution

The fourth proportional to 18,988.16, 28,455.49 and 14,528.57 is: 21,772.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.16 : 28,455.49 = 14,528.57 : x
  2. Step 2: Convert to fraction form
    18,988.16/28,455.49 = 14,528.57/x
  3. Step 3: Cross multiply
    18,988.16x = 28,455.49 × 14,528.57
  4. Step 4: Simplify right side
    18,988.16x = 413,417,578.35
  5. Step 5: Solve for x
    x = 413,417,578.35/18,988.16
  6. Step 6: Final answer
    x = 21,772.39

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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.