Home / 21,380.02-29,501.87-11,818.62

Finding the Fourth Proportional to 21,380.02, 29,501.87 and 11,818.62

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Solution

The fourth proportional to 21,380.02, 29,501.87 and 11,818.62 is: 16,308.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.02 : 29,501.87 = 11,818.62 : x
  2. Step 2: Convert to fraction form
    21,380.02/29,501.87 = 11,818.62/x
  3. Step 3: Cross multiply
    21,380.02x = 29,501.87 × 11,818.62
  4. Step 4: Simplify right side
    21,380.02x = 348,671,265.41
  5. Step 5: Solve for x
    x = 348,671,265.41/21,380.02
  6. Step 6: Final answer
    x = 16,308.28

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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.