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Finding the Fourth Proportional to 13,294.61, 19,903.29 and 7,730.99

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Solution

The fourth proportional to 13,294.61, 19,903.29 and 7,730.99 is: 11,574.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,294.61 : 19,903.29 = 7,730.99 : x
  2. Step 2: Convert to fraction form
    13,294.61/19,903.29 = 7,730.99/x
  3. Step 3: Cross multiply
    13,294.61x = 19,903.29 × 7,730.99
  4. Step 4: Simplify right side
    13,294.61x = 153,872,135.96
  5. Step 5: Solve for x
    x = 153,872,135.96/13,294.61
  6. Step 6: Final answer
    x = 11,574.02

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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.