Home / 10,265.10-15,361.20-7,130.40

Finding the Fourth Proportional to 10,265.10, 15,361.20 and 7,130.40

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Solution

The fourth proportional to 10,265.10, 15,361.20 and 7,130.40 is: 10,670.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,265.10 : 15,361.20 = 7,130.40 : x
  2. Step 2: Convert to fraction form
    10,265.10/15,361.20 = 7,130.40/x
  3. Step 3: Cross multiply
    10,265.10x = 15,361.20 × 7,130.40
  4. Step 4: Simplify right side
    10,265.10x = 109,531,500.48
  5. Step 5: Solve for x
    x = 109,531,500.48/10,265.10
  6. Step 6: Final answer
    x = 10,670.28

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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.