Home / 40,085.86-60,128.16-13,790.83

Finding the Fourth Proportional to 40,085.86, 60,128.16 and 13,790.83

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Solution

The fourth proportional to 40,085.86, 60,128.16 and 13,790.83 is: 20,686.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,085.86 : 60,128.16 = 13,790.83 : x
  2. Step 2: Convert to fraction form
    40,085.86/60,128.16 = 13,790.83/x
  3. Step 3: Cross multiply
    40,085.86x = 60,128.16 × 13,790.83
  4. Step 4: Simplify right side
    40,085.86x = 829,217,232.77
  5. Step 5: Solve for x
    x = 829,217,232.77/40,085.86
  6. Step 6: Final answer
    x = 20,686.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.