Home / 15,040.76-20,756.51-8,235.36

Finding the Fourth Proportional to 15,040.76, 20,756.51 and 8,235.36

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Solution

The fourth proportional to 15,040.76, 20,756.51 and 8,235.36 is: 11,364.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040.76 : 20,756.51 = 8,235.36 : x
  2. Step 2: Convert to fraction form
    15,040.76/20,756.51 = 8,235.36/x
  3. Step 3: Cross multiply
    15,040.76x = 20,756.51 × 8,235.36
  4. Step 4: Simplify right side
    15,040.76x = 170,937,291.02
  5. Step 5: Solve for x
    x = 170,937,291.02/15,040.76
  6. Step 6: Final answer
    x = 11,364.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.