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Finding the Fourth Proportional to 28,405.66, 42,599.40 and 9,426.10

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Solution

The fourth proportional to 28,405.66, 42,599.40 and 9,426.10 is: 14,136.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.66 : 42,599.40 = 9,426.10 : x
  2. Step 2: Convert to fraction form
    28,405.66/42,599.40 = 9,426.10/x
  3. Step 3: Cross multiply
    28,405.66x = 42,599.40 × 9,426.10
  4. Step 4: Simplify right side
    28,405.66x = 401,546,204.34
  5. Step 5: Solve for x
    x = 401,546,204.34/28,405.66
  6. Step 6: Final answer
    x = 14,136.13

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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.