Home / 15,864.75-21,893.40-9,580.77

Finding the Fourth Proportional to 15,864.75, 21,893.40 and 9,580.77

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Solution

The fourth proportional to 15,864.75, 21,893.40 and 9,580.77 is: 13,221.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.75 : 21,893.40 = 9,580.77 : x
  2. Step 2: Convert to fraction form
    15,864.75/21,893.40 = 9,580.77/x
  3. Step 3: Cross multiply
    15,864.75x = 21,893.40 × 9,580.77
  4. Step 4: Simplify right side
    15,864.75x = 209,755,629.92
  5. Step 5: Solve for x
    x = 209,755,629.92/15,864.75
  6. Step 6: Final answer
    x = 13,221.49

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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.