Home / 15,501.54-21,391.21-8,427.90

Finding the Fourth Proportional to 15,501.54, 21,391.21 and 8,427.90

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Solution

The fourth proportional to 15,501.54, 21,391.21 and 8,427.90 is: 11,630.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.54 : 21,391.21 = 8,427.90 : x
  2. Step 2: Convert to fraction form
    15,501.54/21,391.21 = 8,427.90/x
  3. Step 3: Cross multiply
    15,501.54x = 21,391.21 × 8,427.90
  4. Step 4: Simplify right side
    15,501.54x = 180,282,978.76
  5. Step 5: Solve for x
    x = 180,282,978.76/15,501.54
  6. Step 6: Final answer
    x = 11,630.00

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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.