Home / 21,509.10-29,677.37-12,551.49

Finding the Fourth Proportional to 21,509.10, 29,677.37 and 12,551.49

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Solution

The fourth proportional to 21,509.10, 29,677.37 and 12,551.49 is: 17,318.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,509.10 : 29,677.37 = 12,551.49 : x
  2. Step 2: Convert to fraction form
    21,509.10/29,677.37 = 12,551.49/x
  3. Step 3: Cross multiply
    21,509.10x = 29,677.37 × 12,551.49
  4. Step 4: Simplify right side
    21,509.10x = 372,495,150.02
  5. Step 5: Solve for x
    x = 372,495,150.02/21,509.10
  6. Step 6: Final answer
    x = 17,318.03

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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.