Home / 12,686.16-19,006.76-8,529.64

Finding the Fourth Proportional to 12,686.16, 19,006.76 and 8,529.64

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Solution

The fourth proportional to 12,686.16, 19,006.76 and 8,529.64 is: 12,779.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.16 : 19,006.76 = 8,529.64 : x
  2. Step 2: Convert to fraction form
    12,686.16/19,006.76 = 8,529.64/x
  3. Step 3: Cross multiply
    12,686.16x = 19,006.76 × 8,529.64
  4. Step 4: Simplify right side
    12,686.16x = 162,120,820.37
  5. Step 5: Solve for x
    x = 162,120,820.37/12,686.16
  6. Step 6: Final answer
    x = 12,779.35

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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.