Home / 10,430.28-15,640.74-6,215.51

Finding the Fourth Proportional to 10,430.28, 15,640.74 and 6,215.51

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Solution

The fourth proportional to 10,430.28, 15,640.74 and 6,215.51 is: 9,320.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,430.28 : 15,640.74 = 6,215.51 : x
  2. Step 2: Convert to fraction form
    10,430.28/15,640.74 = 6,215.51/x
  3. Step 3: Cross multiply
    10,430.28x = 15,640.74 × 6,215.51
  4. Step 4: Simplify right side
    10,430.28x = 97,215,175.88
  5. Step 5: Solve for x
    x = 97,215,175.88/10,430.28
  6. Step 6: Final answer
    x = 9,320.48

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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.