Home / 31,823.69-43,928.93-21,209.45

Finding the Fourth Proportional to 31,823.69, 43,928.93 and 21,209.45

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Solution

The fourth proportional to 31,823.69, 43,928.93 and 21,209.45 is: 29,277.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,823.69 : 43,928.93 = 21,209.45 : x
  2. Step 2: Convert to fraction form
    31,823.69/43,928.93 = 21,209.45/x
  3. Step 3: Cross multiply
    31,823.69x = 43,928.93 × 21,209.45
  4. Step 4: Simplify right side
    31,823.69x = 931,708,277.77
  5. Step 5: Solve for x
    x = 931,708,277.77/31,823.69
  6. Step 6: Final answer
    x = 29,277.20

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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.