Home / 15,477.87-21,359.01-8,763.45

Finding the Fourth Proportional to 15,477.87, 21,359.01 and 8,763.45

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Solution

The fourth proportional to 15,477.87, 21,359.01 and 8,763.45 is: 12,093.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,477.87 : 21,359.01 = 8,763.45 : x
  2. Step 2: Convert to fraction form
    15,477.87/21,359.01 = 8,763.45/x
  3. Step 3: Cross multiply
    15,477.87x = 21,359.01 × 8,763.45
  4. Step 4: Simplify right side
    15,477.87x = 187,178,616.18
  5. Step 5: Solve for x
    x = 187,178,616.18/15,477.87
  6. Step 6: Final answer
    x = 12,093.31

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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.