Home / 15,627.78-21,559.46-9,336.50

Finding the Fourth Proportional to 15,627.78, 21,559.46 and 9,336.50

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Solution

The fourth proportional to 15,627.78, 21,559.46 and 9,336.50 is: 12,880.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,627.78 : 21,559.46 = 9,336.50 : x
  2. Step 2: Convert to fraction form
    15,627.78/21,559.46 = 9,336.50/x
  3. Step 3: Cross multiply
    15,627.78x = 21,559.46 × 9,336.50
  4. Step 4: Simplify right side
    15,627.78x = 201,289,898.29
  5. Step 5: Solve for x
    x = 201,289,898.29/15,627.78
  6. Step 6: Final answer
    x = 12,880.26

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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.