Home / 12,156.08-18,239.58-7,483.19

Finding the Fourth Proportional to 12,156.08, 18,239.58 and 7,483.19

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Solution

The fourth proportional to 12,156.08, 18,239.58 and 7,483.19 is: 11,228.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.08 : 18,239.58 = 7,483.19 : x
  2. Step 2: Convert to fraction form
    12,156.08/18,239.58 = 7,483.19/x
  3. Step 3: Cross multiply
    12,156.08x = 18,239.58 × 7,483.19
  4. Step 4: Simplify right side
    12,156.08x = 136,490,151.46
  5. Step 5: Solve for x
    x = 136,490,151.46/12,156.08
  6. Step 6: Final answer
    x = 11,228.14

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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.