Home / 25,485.12-35,152.32-15,549.12

Finding the Fourth Proportional to 25,485.12, 35,152.32 and 15,549.12

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Solution

The fourth proportional to 25,485.12, 35,152.32 and 15,549.12 is: 21,447.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,485.12 : 35,152.32 = 15,549.12 : x
  2. Step 2: Convert to fraction form
    25,485.12/35,152.32 = 15,549.12/x
  3. Step 3: Cross multiply
    25,485.12x = 35,152.32 × 15,549.12
  4. Step 4: Simplify right side
    25,485.12x = 546,587,641.96
  5. Step 5: Solve for x
    x = 546,587,641.96/25,485.12
  6. Step 6: Final answer
    x = 21,447.32

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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.