Home / 15,501.67-21,392.49-8,427.94

Finding the Fourth Proportional to 15,501.67, 21,392.49 and 8,427.94

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Solution

The fourth proportional to 15,501.67, 21,392.49 and 8,427.94 is: 11,630.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.67 : 21,392.49 = 8,427.94 : x
  2. Step 2: Convert to fraction form
    15,501.67/21,392.49 = 8,427.94/x
  3. Step 3: Cross multiply
    15,501.67x = 21,392.49 × 8,427.94
  4. Step 4: Simplify right side
    15,501.67x = 180,294,622.17
  5. Step 5: Solve for x
    x = 180,294,622.17/15,501.67
  6. Step 6: Final answer
    x = 11,630.66

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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.