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Finding the Fourth Proportional to 19,392.66, 29,088.99 and 15,478.74

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Solution

The fourth proportional to 19,392.66, 29,088.99 and 15,478.74 is: 23,218.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,392.66 : 29,088.99 = 15,478.74 : x
  2. Step 2: Convert to fraction form
    19,392.66/29,088.99 = 15,478.74/x
  3. Step 3: Cross multiply
    19,392.66x = 29,088.99 × 15,478.74
  4. Step 4: Simplify right side
    19,392.66x = 450,260,913.07
  5. Step 5: Solve for x
    x = 450,260,913.07/19,392.66
  6. Step 6: Final answer
    x = 23,218.11

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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.