Home / 10,070.78-15,108.56-9,903.44

Finding the Fourth Proportional to 10,070.78, 15,108.56 and 9,903.44

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Solution

The fourth proportional to 10,070.78, 15,108.56 and 9,903.44 is: 14,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,070.78 : 15,108.56 = 9,903.44 : x
  2. Step 2: Convert to fraction form
    10,070.78/15,108.56 = 9,903.44/x
  3. Step 3: Cross multiply
    10,070.78x = 15,108.56 × 9,903.44
  4. Step 4: Simplify right side
    10,070.78x = 149,626,667.93
  5. Step 5: Solve for x
    x = 149,626,667.93/10,070.78
  6. Step 6: Final answer
    x = 14,857.51

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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.