Home / 15,551.30-21,460.16-8,477.57

Finding the Fourth Proportional to 15,551.30, 21,460.16 and 8,477.57

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Solution

The fourth proportional to 15,551.30, 21,460.16 and 8,477.57 is: 11,698.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.30 : 21,460.16 = 8,477.57 : x
  2. Step 2: Convert to fraction form
    15,551.30/21,460.16 = 8,477.57/x
  3. Step 3: Cross multiply
    15,551.30x = 21,460.16 × 8,477.57
  4. Step 4: Simplify right side
    15,551.30x = 181,929,858.92
  5. Step 5: Solve for x
    x = 181,929,858.92/15,551.30
  6. Step 6: Final answer
    x = 11,698.70

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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.