Home / 15,569.37-21,478.45-9,191.62

Finding the Fourth Proportional to 15,569.37, 21,478.45 and 9,191.62

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Solution

The fourth proportional to 15,569.37, 21,478.45 and 9,191.62 is: 12,680.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,569.37 : 21,478.45 = 9,191.62 : x
  2. Step 2: Convert to fraction form
    15,569.37/21,478.45 = 9,191.62/x
  3. Step 3: Cross multiply
    15,569.37x = 21,478.45 × 9,191.62
  4. Step 4: Simplify right side
    15,569.37x = 197,421,725.70
  5. Step 5: Solve for x
    x = 197,421,725.70/15,569.37
  6. Step 6: Final answer
    x = 12,680.13

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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.