Home / 28,136.08-38,827.35-15,388.98

Finding the Fourth Proportional to 28,136.08, 38,827.35 and 15,388.98

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Solution

The fourth proportional to 28,136.08, 38,827.35 and 15,388.98 is: 21,236.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.08 : 38,827.35 = 15,388.98 : x
  2. Step 2: Convert to fraction form
    28,136.08/38,827.35 = 15,388.98/x
  3. Step 3: Cross multiply
    28,136.08x = 38,827.35 × 15,388.98
  4. Step 4: Simplify right side
    28,136.08x = 597,513,312.60
  5. Step 5: Solve for x
    x = 597,513,312.60/28,136.08
  6. Step 6: Final answer
    x = 21,236.55

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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.