Home / 27,808.89-38,376.88-15,871.98

Finding the Fourth Proportional to 27,808.89, 38,376.88 and 15,871.98

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Solution

The fourth proportional to 27,808.89, 38,376.88 and 15,871.98 is: 21,903.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,808.89 : 38,376.88 = 15,871.98 : x
  2. Step 2: Convert to fraction form
    27,808.89/38,376.88 = 15,871.98/x
  3. Step 3: Cross multiply
    27,808.89x = 38,376.88 × 15,871.98
  4. Step 4: Simplify right side
    27,808.89x = 609,117,071.82
  5. Step 5: Solve for x
    x = 609,117,071.82/27,808.89
  6. Step 6: Final answer
    x = 21,903.68

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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.