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Finding the Fourth Proportional to 19,312.68, 28,969.02 and 8,923.08

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Solution

The fourth proportional to 19,312.68, 28,969.02 and 8,923.08 is: 13,384.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,312.68 : 28,969.02 = 8,923.08 : x
  2. Step 2: Convert to fraction form
    19,312.68/28,969.02 = 8,923.08/x
  3. Step 3: Cross multiply
    19,312.68x = 28,969.02 × 8,923.08
  4. Step 4: Simplify right side
    19,312.68x = 258,492,882.98
  5. Step 5: Solve for x
    x = 258,492,882.98/19,312.68
  6. Step 6: Final answer
    x = 13,384.62

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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.