Home / 13,572.69-18,721.63-9,789.86

Finding the Fourth Proportional to 13,572.69, 18,721.63 and 9,789.86

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Solution

The fourth proportional to 13,572.69, 18,721.63 and 9,789.86 is: 13,503.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.69 : 18,721.63 = 9,789.86 : x
  2. Step 2: Convert to fraction form
    13,572.69/18,721.63 = 9,789.86/x
  3. Step 3: Cross multiply
    13,572.69x = 18,721.63 × 9,789.86
  4. Step 4: Simplify right side
    13,572.69x = 183,282,195.71
  5. Step 5: Solve for x
    x = 183,282,195.71/13,572.69
  6. Step 6: Final answer
    x = 13,503.75

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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.