Home / 19,851.57-27,407.99-12,305.93

Finding the Fourth Proportional to 19,851.57, 27,407.99 and 12,305.93

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Solution

The fourth proportional to 19,851.57, 27,407.99 and 12,305.93 is: 16,990.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,851.57 : 27,407.99 = 12,305.93 : x
  2. Step 2: Convert to fraction form
    19,851.57/27,407.99 = 12,305.93/x
  3. Step 3: Cross multiply
    19,851.57x = 27,407.99 × 12,305.93
  4. Step 4: Simplify right side
    19,851.57x = 337,280,607.81
  5. Step 5: Solve for x
    x = 337,280,607.81/19,851.57
  6. Step 6: Final answer
    x = 16,990.12

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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.