Home / 20,875.32-28,813.32-14,172.17

Finding the Fourth Proportional to 20,875.32, 28,813.32 and 14,172.17

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Solution

The fourth proportional to 20,875.32, 28,813.32 and 14,172.17 is: 19,561.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.32 : 28,813.32 = 14,172.17 : x
  2. Step 2: Convert to fraction form
    20,875.32/28,813.32 = 14,172.17/x
  3. Step 3: Cross multiply
    20,875.32x = 28,813.32 × 14,172.17
  4. Step 4: Simplify right side
    20,875.32x = 408,347,125.24
  5. Step 5: Solve for x
    x = 408,347,125.24/20,875.32
  6. Step 6: Final answer
    x = 19,561.24

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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.