Home / 42,420.96-63,633.64-10,831.32

Finding the Fourth Proportional to 42,420.96, 63,633.64 and 10,831.32

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Solution

The fourth proportional to 42,420.96, 63,633.64 and 10,831.32 is: 16,247.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,420.96 : 63,633.64 = 10,831.32 : x
  2. Step 2: Convert to fraction form
    42,420.96/63,633.64 = 10,831.32/x
  3. Step 3: Cross multiply
    42,420.96x = 63,633.64 × 10,831.32
  4. Step 4: Simplify right side
    42,420.96x = 689,236,317.60
  5. Step 5: Solve for x
    x = 689,236,317.60/42,420.96
  6. Step 6: Final answer
    x = 16,247.54

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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.