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Finding the Fourth Proportional to 19,152, 26,423.28 and 12,080.16

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Solution

The fourth proportional to 19,152, 26,423.28 and 12,080.16 is: 16,666.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152 : 26,423.28 = 12,080.16 : x
  2. Step 2: Convert to fraction form
    19,152/26,423.28 = 12,080.16/x
  3. Step 3: Cross multiply
    19,152x = 26,423.28 × 12,080.16
  4. Step 4: Simplify right side
    19,152x = 319,197,450.12
  5. Step 5: Solve for x
    x = 319,197,450.12/19,152
  6. Step 6: Final answer
    x = 16,666.53

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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.