Home / 28,015.34-38,661.18-15,440.10

Finding the Fourth Proportional to 28,015.34, 38,661.18 and 15,440.10

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Solution

The fourth proportional to 28,015.34, 38,661.18 and 15,440.10 is: 21,307.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.34 : 38,661.18 = 15,440.10 : x
  2. Step 2: Convert to fraction form
    28,015.34/38,661.18 = 15,440.10/x
  3. Step 3: Cross multiply
    28,015.34x = 38,661.18 × 15,440.10
  4. Step 4: Simplify right side
    28,015.34x = 596,932,485.32
  5. Step 5: Solve for x
    x = 596,932,485.32/28,015.34
  6. Step 6: Final answer
    x = 21,307.34

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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.