Home / 10,009.20-15,013.80-4,815.60

Finding the Fourth Proportional to 10,009.20, 15,013.80 and 4,815.60

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Solution

The fourth proportional to 10,009.20, 15,013.80 and 4,815.60 is: 7,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,009.20 : 15,013.80 = 4,815.60 : x
  2. Step 2: Convert to fraction form
    10,009.20/15,013.80 = 4,815.60/x
  3. Step 3: Cross multiply
    10,009.20x = 15,013.80 × 4,815.60
  4. Step 4: Simplify right side
    10,009.20x = 72,300,455.28
  5. Step 5: Solve for x
    x = 72,300,455.28/10,009.20
  6. Step 6: Final answer
    x = 7,223.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.