Home / 13,218.12-18,228.93-8,746.38

Finding the Fourth Proportional to 13,218.12, 18,228.93 and 8,746.38

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Solution

The fourth proportional to 13,218.12, 18,228.93 and 8,746.38 is: 12,062.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.12 : 18,228.93 = 8,746.38 : x
  2. Step 2: Convert to fraction form
    13,218.12/18,228.93 = 8,746.38/x
  3. Step 3: Cross multiply
    13,218.12x = 18,228.93 × 8,746.38
  4. Step 4: Simplify right side
    13,218.12x = 159,437,148.77
  5. Step 5: Solve for x
    x = 159,437,148.77/13,218.12
  6. Step 6: Final answer
    x = 12,062.01

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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.