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Finding the Fourth Proportional to 9,938.40, 14,810.16 and 9,063.60

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Solution

The fourth proportional to 9,938.40, 14,810.16 and 9,063.60 is: 13,506.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,938.40 : 14,810.16 = 9,063.60 : x
  2. Step 2: Convert to fraction form
    9,938.40/14,810.16 = 9,063.60/x
  3. Step 3: Cross multiply
    9,938.40x = 14,810.16 × 9,063.60
  4. Step 4: Simplify right side
    9,938.40x = 134,233,366.18
  5. Step 5: Solve for x
    x = 134,233,366.18/9,938.40
  6. Step 6: Final answer
    x = 13,506.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.