Home / 28,362.32-39,140.20-15,615.16

Finding the Fourth Proportional to 28,362.32, 39,140.20 and 15,615.16

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Solution

The fourth proportional to 28,362.32, 39,140.20 and 15,615.16 is: 21,549.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,362.32 : 39,140.20 = 15,615.16 : x
  2. Step 2: Convert to fraction form
    28,362.32/39,140.20 = 15,615.16/x
  3. Step 3: Cross multiply
    28,362.32x = 39,140.20 × 15,615.16
  4. Step 4: Simplify right side
    28,362.32x = 611,180,485.43
  5. Step 5: Solve for x
    x = 611,180,485.43/28,362.32
  6. Step 6: Final answer
    x = 21,549.03

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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.