Home / 15,531.02-21,433.05-8,457.44

Finding the Fourth Proportional to 15,531.02, 21,433.05 and 8,457.44

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Solution

The fourth proportional to 15,531.02, 21,433.05 and 8,457.44 is: 11,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.02 : 21,433.05 = 8,457.44 : x
  2. Step 2: Convert to fraction form
    15,531.02/21,433.05 = 8,457.44/x
  3. Step 3: Cross multiply
    15,531.02x = 21,433.05 × 8,457.44
  4. Step 4: Simplify right side
    15,531.02x = 181,268,627.23
  5. Step 5: Solve for x
    x = 181,268,627.23/15,531.02
  6. Step 6: Final answer
    x = 11,671.40

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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.