Home / 15,501.16-21,391.74-8,427.60

Finding the Fourth Proportional to 15,501.16, 21,391.74 and 8,427.60

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Solution

The fourth proportional to 15,501.16, 21,391.74 and 8,427.60 is: 11,630.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.16 : 21,391.74 = 8,427.60 : x
  2. Step 2: Convert to fraction form
    15,501.16/21,391.74 = 8,427.60/x
  3. Step 3: Cross multiply
    15,501.16x = 21,391.74 × 8,427.60
  4. Step 4: Simplify right side
    15,501.16x = 180,281,028.02
  5. Step 5: Solve for x
    x = 180,281,028.02/15,501.16
  6. Step 6: Final answer
    x = 11,630.16

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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.