Home / 15,572.47-21,490.71-8,768.83

Finding the Fourth Proportional to 15,572.47, 21,490.71 and 8,768.83

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Solution

The fourth proportional to 15,572.47, 21,490.71 and 8,768.83 is: 12,101.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,572.47 : 21,490.71 = 8,768.83 : x
  2. Step 2: Convert to fraction form
    15,572.47/21,490.71 = 8,768.83/x
  3. Step 3: Cross multiply
    15,572.47x = 21,490.71 × 8,768.83
  4. Step 4: Simplify right side
    15,572.47x = 188,448,328.84
  5. Step 5: Solve for x
    x = 188,448,328.84/15,572.47
  6. Step 6: Final answer
    x = 12,101.38

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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.