Home / 15,469.47-21,347.64-8,756.37

Finding the Fourth Proportional to 15,469.47, 21,347.64 and 8,756.37

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Solution

The fourth proportional to 15,469.47, 21,347.64 and 8,756.37 is: 12,083.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.47 : 21,347.64 = 8,756.37 : x
  2. Step 2: Convert to fraction form
    15,469.47/21,347.64 = 8,756.37/x
  3. Step 3: Cross multiply
    15,469.47x = 21,347.64 × 8,756.37
  4. Step 4: Simplify right side
    15,469.47x = 186,927,834.47
  5. Step 5: Solve for x
    x = 186,927,834.47/15,469.47
  6. Step 6: Final answer
    x = 12,083.66

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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.