Home / 13,127.61-19,688.73-3,765.12

Finding the Fourth Proportional to 13,127.61, 19,688.73 and 3,765.12

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Solution

The fourth proportional to 13,127.61, 19,688.73 and 3,765.12 is: 5,646.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.61 : 19,688.73 = 3,765.12 : x
  2. Step 2: Convert to fraction form
    13,127.61/19,688.73 = 3,765.12/x
  3. Step 3: Cross multiply
    13,127.61x = 19,688.73 × 3,765.12
  4. Step 4: Simplify right side
    13,127.61x = 74,130,431.10
  5. Step 5: Solve for x
    x = 74,130,431.10/13,127.61
  6. Step 6: Final answer
    x = 5,646.91

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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.