Home / 19,143.12-28,688.58-9,262.68

Finding the Fourth Proportional to 19,143.12, 28,688.58 and 9,262.68

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Solution

The fourth proportional to 19,143.12, 28,688.58 and 9,262.68 is: 13,881.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.12 : 28,688.58 = 9,262.68 : x
  2. Step 2: Convert to fraction form
    19,143.12/28,688.58 = 9,262.68/x
  3. Step 3: Cross multiply
    19,143.12x = 28,688.58 × 9,262.68
  4. Step 4: Simplify right side
    19,143.12x = 265,733,136.19
  5. Step 5: Solve for x
    x = 265,733,136.19/19,143.12
  6. Step 6: Final answer
    x = 13,881.39

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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.