Home / 28,461.52-39,276.80-15,886.16

Finding the Fourth Proportional to 28,461.52, 39,276.80 and 15,886.16

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Solution

The fourth proportional to 28,461.52, 39,276.80 and 15,886.16 is: 21,922.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,461.52 : 39,276.80 = 15,886.16 : x
  2. Step 2: Convert to fraction form
    28,461.52/39,276.80 = 15,886.16/x
  3. Step 3: Cross multiply
    28,461.52x = 39,276.80 × 15,886.16
  4. Step 4: Simplify right side
    28,461.52x = 623,957,529.09
  5. Step 5: Solve for x
    x = 623,957,529.09/28,461.52
  6. Step 6: Final answer
    x = 21,922.85

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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.