Home / 15,795.60-21,730.86-15,358.20

Finding the Fourth Proportional to 15,795.60, 21,730.86 and 15,358.20

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Solution

The fourth proportional to 15,795.60, 21,730.86 and 15,358.20 is: 21,129.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,795.60 : 21,730.86 = 15,358.20 : x
  2. Step 2: Convert to fraction form
    15,795.60/21,730.86 = 15,358.20/x
  3. Step 3: Cross multiply
    15,795.60x = 21,730.86 × 15,358.20
  4. Step 4: Simplify right side
    15,795.60x = 333,746,894.05
  5. Step 5: Solve for x
    x = 333,746,894.05/15,795.60
  6. Step 6: Final answer
    x = 21,129.11

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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.