Home / 21,288.02-29,374.45-12,089.25

Finding the Fourth Proportional to 21,288.02, 29,374.45 and 12,089.25

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Solution

The fourth proportional to 21,288.02, 29,374.45 and 12,089.25 is: 16,681.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.02 : 29,374.45 = 12,089.25 : x
  2. Step 2: Convert to fraction form
    21,288.02/29,374.45 = 12,089.25/x
  3. Step 3: Cross multiply
    21,288.02x = 29,374.45 × 12,089.25
  4. Step 4: Simplify right side
    21,288.02x = 355,115,039.44
  5. Step 5: Solve for x
    x = 355,115,039.44/21,288.02
  6. Step 6: Final answer
    x = 16,681.45

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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.