Home / 21,626.76-29,838.06-12,671.40

Finding the Fourth Proportional to 21,626.76, 29,838.06 and 12,671.40

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Solution

The fourth proportional to 21,626.76, 29,838.06 and 12,671.40 is: 17,482.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,626.76 : 29,838.06 = 12,671.40 : x
  2. Step 2: Convert to fraction form
    21,626.76/29,838.06 = 12,671.40/x
  3. Step 3: Cross multiply
    21,626.76x = 29,838.06 × 12,671.40
  4. Step 4: Simplify right side
    21,626.76x = 378,089,993.48
  5. Step 5: Solve for x
    x = 378,089,993.48/21,626.76
  6. Step 6: Final answer
    x = 17,482.51

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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.