Home / 15,643.44-21,588.21-8,569.40

Finding the Fourth Proportional to 15,643.44, 21,588.21 and 8,569.40

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Solution

The fourth proportional to 15,643.44, 21,588.21 and 8,569.40 is: 11,825.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.44 : 21,588.21 = 8,569.40 : x
  2. Step 2: Convert to fraction form
    15,643.44/21,588.21 = 8,569.40/x
  3. Step 3: Cross multiply
    15,643.44x = 21,588.21 × 8,569.40
  4. Step 4: Simplify right side
    15,643.44x = 184,997,898.83
  5. Step 5: Solve for x
    x = 184,997,898.83/15,643.44
  6. Step 6: Final answer
    x = 11,825.91

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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.