Home / 21,679.02-29,916.06-12,734.19

Finding the Fourth Proportional to 21,679.02, 29,916.06 and 12,734.19

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Solution

The fourth proportional to 21,679.02, 29,916.06 and 12,734.19 is: 17,572.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.02 : 29,916.06 = 12,734.19 : x
  2. Step 2: Convert to fraction form
    21,679.02/29,916.06 = 12,734.19/x
  3. Step 3: Cross multiply
    21,679.02x = 29,916.06 × 12,734.19
  4. Step 4: Simplify right side
    21,679.02x = 380,956,792.09
  5. Step 5: Solve for x
    x = 380,956,792.09/21,679.02
  6. Step 6: Final answer
    x = 17,572.60

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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.