Home / 21,903.12-30,223.86-12,343.44

Finding the Fourth Proportional to 21,903.12, 30,223.86 and 12,343.44

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Solution

The fourth proportional to 21,903.12, 30,223.86 and 12,343.44 is: 17,032.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.12 : 30,223.86 = 12,343.44 : x
  2. Step 2: Convert to fraction form
    21,903.12/30,223.86 = 12,343.44/x
  3. Step 3: Cross multiply
    21,903.12x = 30,223.86 × 12,343.44
  4. Step 4: Simplify right side
    21,903.12x = 373,066,402.48
  5. Step 5: Solve for x
    x = 373,066,402.48/21,903.12
  6. Step 6: Final answer
    x = 17,032.57

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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.