Home / 20,730.02-28,611.51-14,438.75

Finding the Fourth Proportional to 20,730.02, 28,611.51 and 14,438.75

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Solution

The fourth proportional to 20,730.02, 28,611.51 and 14,438.75 is: 19,928.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.02 : 28,611.51 = 14,438.75 : x
  2. Step 2: Convert to fraction form
    20,730.02/28,611.51 = 14,438.75/x
  3. Step 3: Cross multiply
    20,730.02x = 28,611.51 × 14,438.75
  4. Step 4: Simplify right side
    20,730.02x = 413,114,440.01
  5. Step 5: Solve for x
    x = 413,114,440.01/20,730.02
  6. Step 6: Final answer
    x = 19,928.32

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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.