Home / 21,921.86-30,254.02-13,423.94

Finding the Fourth Proportional to 21,921.86, 30,254.02 and 13,423.94

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Solution

The fourth proportional to 21,921.86, 30,254.02 and 13,423.94 is: 18,526.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.86 : 30,254.02 = 13,423.94 : x
  2. Step 2: Convert to fraction form
    21,921.86/30,254.02 = 13,423.94/x
  3. Step 3: Cross multiply
    21,921.86x = 30,254.02 × 13,423.94
  4. Step 4: Simplify right side
    21,921.86x = 406,128,149.24
  5. Step 5: Solve for x
    x = 406,128,149.24/21,921.86
  6. Step 6: Final answer
    x = 18,526.17

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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.