Home / 15,669.84-21,627.64-14,408.90

Finding the Fourth Proportional to 15,669.84, 21,627.64 and 14,408.90

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Solution

The fourth proportional to 15,669.84, 21,627.64 and 14,408.90 is: 19,887.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,669.84 : 21,627.64 = 14,408.90 : x
  2. Step 2: Convert to fraction form
    15,669.84/21,627.64 = 14,408.90/x
  3. Step 3: Cross multiply
    15,669.84x = 21,627.64 × 14,408.90
  4. Step 4: Simplify right side
    15,669.84x = 311,630,502.00
  5. Step 5: Solve for x
    x = 311,630,502.00/15,669.84
  6. Step 6: Final answer
    x = 19,887.28

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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.