Home / 15,329.50-21,154.06-8,956.45

Finding the Fourth Proportional to 15,329.50, 21,154.06 and 8,956.45

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Solution

The fourth proportional to 15,329.50, 21,154.06 and 8,956.45 is: 12,359.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.50 : 21,154.06 = 8,956.45 : x
  2. Step 2: Convert to fraction form
    15,329.50/21,154.06 = 8,956.45/x
  3. Step 3: Cross multiply
    15,329.50x = 21,154.06 × 8,956.45
  4. Step 4: Simplify right side
    15,329.50x = 189,465,258.83
  5. Step 5: Solve for x
    x = 189,465,258.83/15,329.50
  6. Step 6: Final answer
    x = 12,359.52

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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.