Home / 18,747.04-28,124.52-9,980.68

Finding the Fourth Proportional to 18,747.04, 28,124.52 and 9,980.68

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Solution

The fourth proportional to 18,747.04, 28,124.52 and 9,980.68 is: 14,973.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.04 : 28,124.52 = 9,980.68 : x
  2. Step 2: Convert to fraction form
    18,747.04/28,124.52 = 9,980.68/x
  3. Step 3: Cross multiply
    18,747.04x = 28,124.52 × 9,980.68
  4. Step 4: Simplify right side
    18,747.04x = 280,701,834.27
  5. Step 5: Solve for x
    x = 280,701,834.27/18,747.04
  6. Step 6: Final answer
    x = 14,973.13

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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.