Home / 21,254.85-29,332.69-12,300.64

Finding the Fourth Proportional to 21,254.85, 29,332.69 and 12,300.64

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Solution

The fourth proportional to 21,254.85, 29,332.69 and 12,300.64 is: 16,975.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.85 : 29,332.69 = 12,300.64 : x
  2. Step 2: Convert to fraction form
    21,254.85/29,332.69 = 12,300.64/x
  3. Step 3: Cross multiply
    21,254.85x = 29,332.69 × 12,300.64
  4. Step 4: Simplify right side
    21,254.85x = 360,810,755.84
  5. Step 5: Solve for x
    x = 360,810,755.84/21,254.85
  6. Step 6: Final answer
    x = 16,975.46

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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.