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Finding the Fourth Proportional to 9,916.81, 14,877.69 and 7,000.81

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Solution

The fourth proportional to 9,916.81, 14,877.69 and 7,000.81 is: 10,502.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.81 : 14,877.69 = 7,000.81 : x
  2. Step 2: Convert to fraction form
    9,916.81/14,877.69 = 7,000.81/x
  3. Step 3: Cross multiply
    9,916.81x = 14,877.69 × 7,000.81
  4. Step 4: Simplify right side
    9,916.81x = 104,155,880.93
  5. Step 5: Solve for x
    x = 104,155,880.93/9,916.81
  6. Step 6: Final answer
    x = 10,502.96

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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.