Home / 20,830.73-28,746.28-19,136.25

Finding the Fourth Proportional to 20,830.73, 28,746.28 and 19,136.25

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Solution

The fourth proportional to 20,830.73, 28,746.28 and 19,136.25 is: 26,407.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.73 : 28,746.28 = 19,136.25 : x
  2. Step 2: Convert to fraction form
    20,830.73/28,746.28 = 19,136.25/x
  3. Step 3: Cross multiply
    20,830.73x = 28,746.28 × 19,136.25
  4. Step 4: Simplify right side
    20,830.73x = 550,096,024.57
  5. Step 5: Solve for x
    x = 550,096,024.57/20,830.73
  6. Step 6: Final answer
    x = 26,407.92

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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.