Home / 27,822.72-38,396.40-15,886.16

Finding the Fourth Proportional to 27,822.72, 38,396.40 and 15,886.16

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Solution

The fourth proportional to 27,822.72, 38,396.40 and 15,886.16 is: 21,923.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,822.72 : 38,396.40 = 15,886.16 : x
  2. Step 2: Convert to fraction form
    27,822.72/38,396.40 = 15,886.16/x
  3. Step 3: Cross multiply
    27,822.72x = 38,396.40 × 15,886.16
  4. Step 4: Simplify right side
    27,822.72x = 609,971,353.82
  5. Step 5: Solve for x
    x = 609,971,353.82/27,822.72
  6. Step 6: Final answer
    x = 21,923.50

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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.