Home / 15,477.72-21,359.70-8,763.20

Finding the Fourth Proportional to 15,477.72, 21,359.70 and 8,763.20

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Solution

The fourth proportional to 15,477.72, 21,359.70 and 8,763.20 is: 12,093.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,477.72 : 21,359.70 = 8,763.20 : x
  2. Step 2: Convert to fraction form
    15,477.72/21,359.70 = 8,763.20/x
  3. Step 3: Cross multiply
    15,477.72x = 21,359.70 × 8,763.20
  4. Step 4: Simplify right side
    15,477.72x = 187,179,323.04
  5. Step 5: Solve for x
    x = 187,179,323.04/15,477.72
  6. Step 6: Final answer
    x = 12,093.47

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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.