Home / 21,487.64-29,653.45-12,056.90

Finding the Fourth Proportional to 21,487.64, 29,653.45 and 12,056.90

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Solution

The fourth proportional to 21,487.64, 29,653.45 and 12,056.90 is: 16,638.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.64 : 29,653.45 = 12,056.90 : x
  2. Step 2: Convert to fraction form
    21,487.64/29,653.45 = 12,056.90/x
  3. Step 3: Cross multiply
    21,487.64x = 29,653.45 × 12,056.90
  4. Step 4: Simplify right side
    21,487.64x = 357,528,502.90
  5. Step 5: Solve for x
    x = 357,528,502.90/21,487.64
  6. Step 6: Final answer
    x = 16,638.80

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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.