Home / 21,784.08-32,683.40-8,640.24

Finding the Fourth Proportional to 21,784.08, 32,683.40 and 8,640.24

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Solution

The fourth proportional to 21,784.08, 32,683.40 and 8,640.24 is: 12,963.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784.08 : 32,683.40 = 8,640.24 : x
  2. Step 2: Convert to fraction form
    21,784.08/32,683.40 = 8,640.24/x
  3. Step 3: Cross multiply
    21,784.08x = 32,683.40 × 8,640.24
  4. Step 4: Simplify right side
    21,784.08x = 282,392,420.02
  5. Step 5: Solve for x
    x = 282,392,420.02/21,784.08
  6. Step 6: Final answer
    x = 12,963.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.