Home / 21,283.29-29,374.20-12,790.14

Finding the Fourth Proportional to 21,283.29, 29,374.20 and 12,790.14

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Solution

The fourth proportional to 21,283.29, 29,374.20 and 12,790.14 is: 17,652.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.29 : 29,374.20 = 12,790.14 : x
  2. Step 2: Convert to fraction form
    21,283.29/29,374.20 = 12,790.14/x
  3. Step 3: Cross multiply
    21,283.29x = 29,374.20 × 12,790.14
  4. Step 4: Simplify right side
    21,283.29x = 375,700,130.39
  5. Step 5: Solve for x
    x = 375,700,130.39/21,283.29
  6. Step 6: Final answer
    x = 17,652.35

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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.