Home / 21,738.04-30,000.16-12,308.02

Finding the Fourth Proportional to 21,738.04, 30,000.16 and 12,308.02

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Solution

The fourth proportional to 21,738.04, 30,000.16 and 12,308.02 is: 16,986.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.04 : 30,000.16 = 12,308.02 : x
  2. Step 2: Convert to fraction form
    21,738.04/30,000.16 = 12,308.02/x
  3. Step 3: Cross multiply
    21,738.04x = 30,000.16 × 12,308.02
  4. Step 4: Simplify right side
    21,738.04x = 369,242,569.28
  5. Step 5: Solve for x
    x = 369,242,569.28/21,738.04
  6. Step 6: Final answer
    x = 16,986.01

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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.