Home / 21,989.10-30,334.70-14,026.30

Finding the Fourth Proportional to 21,989.10, 30,334.70 and 14,026.30

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Solution

The fourth proportional to 21,989.10, 30,334.70 and 14,026.30 is: 19,349.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,989.10 : 30,334.70 = 14,026.30 : x
  2. Step 2: Convert to fraction form
    21,989.10/30,334.70 = 14,026.30/x
  3. Step 3: Cross multiply
    21,989.10x = 30,334.70 × 14,026.30
  4. Step 4: Simplify right side
    21,989.10x = 425,483,561.84
  5. Step 5: Solve for x
    x = 425,483,561.84/21,989.10
  6. Step 6: Final answer
    x = 19,349.75

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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.