Home / 21,385.90-29,502.29-13,834.60

Finding the Fourth Proportional to 21,385.90, 29,502.29 and 13,834.60

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Solution

The fourth proportional to 21,385.90, 29,502.29 and 13,834.60 is: 19,085.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.90 : 29,502.29 = 13,834.60 : x
  2. Step 2: Convert to fraction form
    21,385.90/29,502.29 = 13,834.60/x
  3. Step 3: Cross multiply
    21,385.90x = 29,502.29 × 13,834.60
  4. Step 4: Simplify right side
    21,385.90x = 408,152,283.70
  5. Step 5: Solve for x
    x = 408,152,283.70/21,385.90
  6. Step 6: Final answer
    x = 19,085.11

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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.