Home / 28,157.08-38,856.36-15,409.96

Finding the Fourth Proportional to 28,157.08, 38,856.36 and 15,409.96

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Solution

The fourth proportional to 28,157.08, 38,856.36 and 15,409.96 is: 21,265.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.08 : 38,856.36 = 15,409.96 : x
  2. Step 2: Convert to fraction form
    28,157.08/38,856.36 = 15,409.96/x
  3. Step 3: Cross multiply
    28,157.08x = 38,856.36 × 15,409.96
  4. Step 4: Simplify right side
    28,157.08x = 598,774,953.35
  5. Step 5: Solve for x
    x = 598,774,953.35/28,157.08
  6. Step 6: Final answer
    x = 21,265.52

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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.