Home / 28,454.94-39,271.77-15,880.50

Finding the Fourth Proportional to 28,454.94, 39,271.77 and 15,880.50

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Solution

The fourth proportional to 28,454.94, 39,271.77 and 15,880.50 is: 21,917.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.94 : 39,271.77 = 15,880.50 : x
  2. Step 2: Convert to fraction form
    28,454.94/39,271.77 = 15,880.50/x
  3. Step 3: Cross multiply
    28,454.94x = 39,271.77 × 15,880.50
  4. Step 4: Simplify right side
    28,454.94x = 623,655,343.49
  5. Step 5: Solve for x
    x = 623,655,343.49/28,454.94
  6. Step 6: Final answer
    x = 21,917.30

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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.