Home / 13,415.46-18,510.04-8,038.77

Finding the Fourth Proportional to 13,415.46, 18,510.04 and 8,038.77

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Solution

The fourth proportional to 13,415.46, 18,510.04 and 8,038.77 is: 11,091.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.46 : 18,510.04 = 8,038.77 : x
  2. Step 2: Convert to fraction form
    13,415.46/18,510.04 = 8,038.77/x
  3. Step 3: Cross multiply
    13,415.46x = 18,510.04 × 8,038.77
  4. Step 4: Simplify right side
    13,415.46x = 148,797,954.25
  5. Step 5: Solve for x
    x = 148,797,954.25/13,415.46
  6. Step 6: Final answer
    x = 11,091.53

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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.