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Finding the Fourth Proportional to 14,434.38, 19,919.50 and 7,810.38

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Solution

The fourth proportional to 14,434.38, 19,919.50 and 7,810.38 is: 10,778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,434.38 : 19,919.50 = 7,810.38 : x
  2. Step 2: Convert to fraction form
    14,434.38/19,919.50 = 7,810.38/x
  3. Step 3: Cross multiply
    14,434.38x = 19,919.50 × 7,810.38
  4. Step 4: Simplify right side
    14,434.38x = 155,578,864.41
  5. Step 5: Solve for x
    x = 155,578,864.41/14,434.38
  6. Step 6: Final answer
    x = 10,778.35

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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.