Home / 21,707.06-29,956.28-12,146.63

Finding the Fourth Proportional to 21,707.06, 29,956.28 and 12,146.63

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Solution

The fourth proportional to 21,707.06, 29,956.28 and 12,146.63 is: 16,762.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707.06 : 29,956.28 = 12,146.63 : x
  2. Step 2: Convert to fraction form
    21,707.06/29,956.28 = 12,146.63/x
  3. Step 3: Cross multiply
    21,707.06x = 29,956.28 × 12,146.63
  4. Step 4: Simplify right side
    21,707.06x = 363,867,638.82
  5. Step 5: Solve for x
    x = 363,867,638.82/21,707.06
  6. Step 6: Final answer
    x = 16,762.64

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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.