Home / 31,527.82-43,526.19-20,931.94

Finding the Fourth Proportional to 31,527.82, 43,526.19 and 20,931.94

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Solution

The fourth proportional to 31,527.82, 43,526.19 and 20,931.94 is: 28,897.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,527.82 : 43,526.19 = 20,931.94 : x
  2. Step 2: Convert to fraction form
    31,527.82/43,526.19 = 20,931.94/x
  3. Step 3: Cross multiply
    31,527.82x = 43,526.19 × 20,931.94
  4. Step 4: Simplify right side
    31,527.82x = 911,087,597.51
  5. Step 5: Solve for x
    x = 911,087,597.51/31,527.82
  6. Step 6: Final answer
    x = 28,897.89

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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.