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Finding the Fourth Proportional to 15,423.10, 21,280.04 and 9,050.29

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Solution

The fourth proportional to 15,423.10, 21,280.04 and 9,050.29 is: 12,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.10 : 21,280.04 = 9,050.29 : x
  2. Step 2: Convert to fraction form
    15,423.10/21,280.04 = 9,050.29/x
  3. Step 3: Cross multiply
    15,423.10x = 21,280.04 × 9,050.29
  4. Step 4: Simplify right side
    15,423.10x = 192,590,533.21
  5. Step 5: Solve for x
    x = 192,590,533.21/15,423.10
  6. Step 6: Final answer
    x = 12,487.15

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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.