Home / 15,580.29-21,523.55-13,480.77

Finding the Fourth Proportional to 15,580.29, 21,523.55 and 13,480.77

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Solution

The fourth proportional to 15,580.29, 21,523.55 and 13,480.77 is: 18,623.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.29 : 21,523.55 = 13,480.77 : x
  2. Step 2: Convert to fraction form
    15,580.29/21,523.55 = 13,480.77/x
  3. Step 3: Cross multiply
    15,580.29x = 21,523.55 × 13,480.77
  4. Step 4: Simplify right side
    15,580.29x = 290,153,959.73
  5. Step 5: Solve for x
    x = 290,153,959.73/15,580.29
  6. Step 6: Final answer
    x = 18,623.14

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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.