Home / 15,365.12-21,203.52-9,077.60

Finding the Fourth Proportional to 15,365.12, 21,203.52 and 9,077.60

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Solution

The fourth proportional to 15,365.12, 21,203.52 and 9,077.60 is: 12,526.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,365.12 : 21,203.52 = 9,077.60 : x
  2. Step 2: Convert to fraction form
    15,365.12/21,203.52 = 9,077.60/x
  3. Step 3: Cross multiply
    15,365.12x = 21,203.52 × 9,077.60
  4. Step 4: Simplify right side
    15,365.12x = 192,477,073.15
  5. Step 5: Solve for x
    x = 192,477,073.15/15,365.12
  6. Step 6: Final answer
    x = 12,526.88

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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.