Home / 31,415.48-43,361.02-19,318.94

Finding the Fourth Proportional to 31,415.48, 43,361.02 and 19,318.94

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Solution

The fourth proportional to 31,415.48, 43,361.02 and 19,318.94 is: 26,664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.48 : 43,361.02 = 19,318.94 : x
  2. Step 2: Convert to fraction form
    31,415.48/43,361.02 = 19,318.94/x
  3. Step 3: Cross multiply
    31,415.48x = 43,361.02 × 19,318.94
  4. Step 4: Simplify right side
    31,415.48x = 837,688,913.67
  5. Step 5: Solve for x
    x = 837,688,913.67/31,415.48
  6. Step 6: Final answer
    x = 26,664.85

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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.