Home / 21,730.04-29,988.94-12,298.60

Finding the Fourth Proportional to 21,730.04, 29,988.94 and 12,298.60

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Solution

The fourth proportional to 21,730.04, 29,988.94 and 12,298.60 is: 16,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,730.04 : 29,988.94 = 12,298.60 : x
  2. Step 2: Convert to fraction form
    21,730.04/29,988.94 = 12,298.60/x
  3. Step 3: Cross multiply
    21,730.04x = 29,988.94 × 12,298.60
  4. Step 4: Simplify right side
    21,730.04x = 368,821,977.48
  5. Step 5: Solve for x
    x = 368,821,977.48/21,730.04
  6. Step 6: Final answer
    x = 16,972.91

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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.