Home / 27,805.72-38,374.66-15,870.86

Finding the Fourth Proportional to 27,805.72, 38,374.66 and 15,870.86

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Solution

The fourth proportional to 27,805.72, 38,374.66 and 15,870.86 is: 21,903.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,805.72 : 38,374.66 = 15,870.86 : x
  2. Step 2: Convert to fraction form
    27,805.72/38,374.66 = 15,870.86/x
  3. Step 3: Cross multiply
    27,805.72x = 38,374.66 × 15,870.86
  4. Step 4: Simplify right side
    27,805.72x = 609,038,856.41
  5. Step 5: Solve for x
    x = 609,038,856.41/27,805.72
  6. Step 6: Final answer
    x = 21,903.37

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Half scale
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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.