Home / 10,390.86-14,339.40-5,675.16

Finding the Fourth Proportional to 10,390.86, 14,339.40 and 5,675.16

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Solution

The fourth proportional to 10,390.86, 14,339.40 and 5,675.16 is: 7,831.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.86 : 14,339.40 = 5,675.16 : x
  2. Step 2: Convert to fraction form
    10,390.86/14,339.40 = 5,675.16/x
  3. Step 3: Cross multiply
    10,390.86x = 14,339.40 × 5,675.16
  4. Step 4: Simplify right side
    10,390.86x = 81,378,389.30
  5. Step 5: Solve for x
    x = 81,378,389.30/10,390.86
  6. Step 6: Final answer
    x = 7,831.73

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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.