Home / 21,317.52-29,436.75-13,373.40

Finding the Fourth Proportional to 21,317.52, 29,436.75 and 13,373.40

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Solution

The fourth proportional to 21,317.52, 29,436.75 and 13,373.40 is: 18,466.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.52 : 29,436.75 = 13,373.40 : x
  2. Step 2: Convert to fraction form
    21,317.52/29,436.75 = 13,373.40/x
  3. Step 3: Cross multiply
    21,317.52x = 29,436.75 × 13,373.40
  4. Step 4: Simplify right side
    21,317.52x = 393,669,432.45
  5. Step 5: Solve for x
    x = 393,669,432.45/21,317.52
  6. Step 6: Final answer
    x = 18,466.94

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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.