Home / 21,461.49-29,616.98-12,515.18

Finding the Fourth Proportional to 21,461.49, 29,616.98 and 12,515.18

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Solution

The fourth proportional to 21,461.49, 29,616.98 and 12,515.18 is: 17,271.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.49 : 29,616.98 = 12,515.18 : x
  2. Step 2: Convert to fraction form
    21,461.49/29,616.98 = 12,515.18/x
  3. Step 3: Cross multiply
    21,461.49x = 29,616.98 × 12,515.18
  4. Step 4: Simplify right side
    21,461.49x = 370,661,625.10
  5. Step 5: Solve for x
    x = 370,661,625.10/21,461.49
  6. Step 6: Final answer
    x = 17,271.01

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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.