Home / 28,810.08-39,759.12-16,871.76

Finding the Fourth Proportional to 28,810.08, 39,759.12 and 16,871.76

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Solution

The fourth proportional to 28,810.08, 39,759.12 and 16,871.76 is: 23,283.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,810.08 : 39,759.12 = 16,871.76 : x
  2. Step 2: Convert to fraction form
    28,810.08/39,759.12 = 16,871.76/x
  3. Step 3: Cross multiply
    28,810.08x = 39,759.12 × 16,871.76
  4. Step 4: Simplify right side
    28,810.08x = 670,806,330.45
  5. Step 5: Solve for x
    x = 670,806,330.45/28,810.08
  6. Step 6: Final answer
    x = 23,283.74

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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.