Home / 14,124.32-21,171.36-8,931.68

Finding the Fourth Proportional to 14,124.32, 21,171.36 and 8,931.68

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Solution

The fourth proportional to 14,124.32, 21,171.36 and 8,931.68 is: 13,387.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.32 : 21,171.36 = 8,931.68 : x
  2. Step 2: Convert to fraction form
    14,124.32/21,171.36 = 8,931.68/x
  3. Step 3: Cross multiply
    14,124.32x = 21,171.36 × 8,931.68
  4. Step 4: Simplify right side
    14,124.32x = 189,095,812.68
  5. Step 5: Solve for x
    x = 189,095,812.68/14,124.32
  6. Step 6: Final answer
    x = 13,387.96

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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.