Home / 13,730.28-18,947.36-8,064.93

Finding the Fourth Proportional to 13,730.28, 18,947.36 and 8,064.93

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Solution

The fourth proportional to 13,730.28, 18,947.36 and 8,064.93 is: 11,129.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.28 : 18,947.36 = 8,064.93 : x
  2. Step 2: Convert to fraction form
    13,730.28/18,947.36 = 8,064.93/x
  3. Step 3: Cross multiply
    13,730.28x = 18,947.36 × 8,064.93
  4. Step 4: Simplify right side
    13,730.28x = 152,809,091.76
  5. Step 5: Solve for x
    x = 152,809,091.76/13,730.28
  6. Step 6: Final answer
    x = 11,129.35

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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.