Home / 31,913.28-44,066.16-20,588.40

Finding the Fourth Proportional to 31,913.28, 44,066.16 and 20,588.40

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Solution

The fourth proportional to 31,913.28, 44,066.16 and 20,588.40 is: 28,428.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,913.28 : 44,066.16 = 20,588.40 : x
  2. Step 2: Convert to fraction form
    31,913.28/44,066.16 = 20,588.40/x
  3. Step 3: Cross multiply
    31,913.28x = 44,066.16 × 20,588.40
  4. Step 4: Simplify right side
    31,913.28x = 907,251,728.54
  5. Step 5: Solve for x
    x = 907,251,728.54/31,913.28
  6. Step 6: Final answer
    x = 28,428.66

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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.