Home / 15,270.19-21,074.21-8,555.77

Finding the Fourth Proportional to 15,270.19, 21,074.21 and 8,555.77

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Solution

The fourth proportional to 15,270.19, 21,074.21 and 8,555.77 is: 11,807.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,270.19 : 21,074.21 = 8,555.77 : x
  2. Step 2: Convert to fraction form
    15,270.19/21,074.21 = 8,555.77/x
  3. Step 3: Cross multiply
    15,270.19x = 21,074.21 × 8,555.77
  4. Step 4: Simplify right side
    15,270.19x = 180,306,093.69
  5. Step 5: Solve for x
    x = 180,306,093.69/15,270.19
  6. Step 6: Final answer
    x = 11,807.72

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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.