Home / 15,629.63-21,569.09-8,555.90

Finding the Fourth Proportional to 15,629.63, 21,569.09 and 8,555.90

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Solution

The fourth proportional to 15,629.63, 21,569.09 and 8,555.90 is: 11,807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.63 : 21,569.09 = 8,555.90 : x
  2. Step 2: Convert to fraction form
    15,629.63/21,569.09 = 8,555.90/x
  3. Step 3: Cross multiply
    15,629.63x = 21,569.09 × 8,555.90
  4. Step 4: Simplify right side
    15,629.63x = 184,542,826.51
  5. Step 5: Solve for x
    x = 184,542,826.51/15,629.63
  6. Step 6: Final answer
    x = 11,807.25

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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.