Home / 10,085.40-15,130.38-5,647.51

Finding the Fourth Proportional to 10,085.40, 15,130.38 and 5,647.51

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Solution

The fourth proportional to 10,085.40, 15,130.38 and 5,647.51 is: 8,472.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.40 : 15,130.38 = 5,647.51 : x
  2. Step 2: Convert to fraction form
    10,085.40/15,130.38 = 5,647.51/x
  3. Step 3: Cross multiply
    10,085.40x = 15,130.38 × 5,647.51
  4. Step 4: Simplify right side
    10,085.40x = 85,448,972.35
  5. Step 5: Solve for x
    x = 85,448,972.35/10,085.40
  6. Step 6: Final answer
    x = 8,472.54

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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.