Home / 15,502.86-21,395.34-8,788.77

Finding the Fourth Proportional to 15,502.86, 21,395.34 and 8,788.77

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Solution

The fourth proportional to 15,502.86, 21,395.34 and 8,788.77 is: 12,129.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.86 : 21,395.34 = 8,788.77 : x
  2. Step 2: Convert to fraction form
    15,502.86/21,395.34 = 8,788.77/x
  3. Step 3: Cross multiply
    15,502.86x = 21,395.34 × 8,788.77
  4. Step 4: Simplify right side
    15,502.86x = 188,038,722.33
  5. Step 5: Solve for x
    x = 188,038,722.33/15,502.86
  6. Step 6: Final answer
    x = 12,129.29

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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.