Home / 31,814.24-43,950.80-20,938.01

Finding the Fourth Proportional to 31,814.24, 43,950.80 and 20,938.01

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Solution

The fourth proportional to 31,814.24, 43,950.80 and 20,938.01 is: 28,925.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,814.24 : 43,950.80 = 20,938.01 : x
  2. Step 2: Convert to fraction form
    31,814.24/43,950.80 = 20,938.01/x
  3. Step 3: Cross multiply
    31,814.24x = 43,950.80 × 20,938.01
  4. Step 4: Simplify right side
    31,814.24x = 920,242,369.72
  5. Step 5: Solve for x
    x = 920,242,369.72/31,814.24
  6. Step 6: Final answer
    x = 28,925.49

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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.