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Finding the Fourth Proportional to 14,921.72, 22,383.95 and 7,130.53

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Solution

The fourth proportional to 14,921.72, 22,383.95 and 7,130.53 is: 10,696.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,921.72 : 22,383.95 = 7,130.53 : x
  2. Step 2: Convert to fraction form
    14,921.72/22,383.95 = 7,130.53/x
  3. Step 3: Cross multiply
    14,921.72x = 22,383.95 × 7,130.53
  4. Step 4: Simplify right side
    14,921.72x = 159,609,419.32
  5. Step 5: Solve for x
    x = 159,609,419.32/14,921.72
  6. Step 6: Final answer
    x = 10,696.45

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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.