Home / 21,470.85-29,626.95-11,910.63

Finding the Fourth Proportional to 21,470.85, 29,626.95 and 11,910.63

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Solution

The fourth proportional to 21,470.85, 29,626.95 and 11,910.63 is: 16,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.85 : 29,626.95 = 11,910.63 : x
  2. Step 2: Convert to fraction form
    21,470.85/29,626.95 = 11,910.63/x
  3. Step 3: Cross multiply
    21,470.85x = 29,626.95 × 11,910.63
  4. Step 4: Simplify right side
    21,470.85x = 352,875,639.48
  5. Step 5: Solve for x
    x = 352,875,639.48/21,470.85
  6. Step 6: Final answer
    x = 16,435.10

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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.