Home / 21,487.21-29,652.87-12,056.47

Finding the Fourth Proportional to 21,487.21, 29,652.87 and 12,056.47

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Solution

The fourth proportional to 21,487.21, 29,652.87 and 12,056.47 is: 16,638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.21 : 29,652.87 = 12,056.47 : x
  2. Step 2: Convert to fraction form
    21,487.21/29,652.87 = 12,056.47/x
  3. Step 3: Cross multiply
    21,487.21x = 29,652.87 × 12,056.47
  4. Step 4: Simplify right side
    21,487.21x = 357,508,973.72
  5. Step 5: Solve for x
    x = 357,508,973.72/21,487.21
  6. Step 6: Final answer
    x = 16,638.22

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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.