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Finding the Fourth Proportional to 21,461.60, 32,192.40 and 6,670.40

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Solution

The fourth proportional to 21,461.60, 32,192.40 and 6,670.40 is: 10,005.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.60 : 32,192.40 = 6,670.40 : x
  2. Step 2: Convert to fraction form
    21,461.60/32,192.40 = 6,670.40/x
  3. Step 3: Cross multiply
    21,461.60x = 32,192.40 × 6,670.40
  4. Step 4: Simplify right side
    21,461.60x = 214,736,184.96
  5. Step 5: Solve for x
    x = 214,736,184.96/21,461.60
  6. Step 6: Final answer
    x = 10,005.60

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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.