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Finding the Fourth Proportional to 14,991, 20,537.40 and 14,430.12

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Solution

The fourth proportional to 14,991, 20,537.40 and 14,430.12 is: 19,769.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991 : 20,537.40 = 14,430.12 : x
  2. Step 2: Convert to fraction form
    14,991/20,537.40 = 14,430.12/x
  3. Step 3: Cross multiply
    14,991x = 20,537.40 × 14,430.12
  4. Step 4: Simplify right side
    14,991x = 296,357,146.49
  5. Step 5: Solve for x
    x = 296,357,146.49/14,991
  6. Step 6: Final answer
    x = 19,769.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.