Home / 15,579.46-21,492.57-9,289.54

Finding the Fourth Proportional to 15,579.46, 21,492.57 and 9,289.54

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Solution

The fourth proportional to 15,579.46, 21,492.57 and 9,289.54 is: 12,815.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.46 : 21,492.57 = 9,289.54 : x
  2. Step 2: Convert to fraction form
    15,579.46/21,492.57 = 9,289.54/x
  3. Step 3: Cross multiply
    15,579.46x = 21,492.57 × 9,289.54
  4. Step 4: Simplify right side
    15,579.46x = 199,656,088.72
  5. Step 5: Solve for x
    x = 199,656,088.72/15,579.46
  6. Step 6: Final answer
    x = 12,815.34

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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.