Home / 19,969.85-27,549.66-13,155.07

Finding the Fourth Proportional to 19,969.85, 27,549.66 and 13,155.07

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Solution

The fourth proportional to 19,969.85, 27,549.66 and 13,155.07 is: 18,148.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,969.85 : 27,549.66 = 13,155.07 : x
  2. Step 2: Convert to fraction form
    19,969.85/27,549.66 = 13,155.07/x
  3. Step 3: Cross multiply
    19,969.85x = 27,549.66 × 13,155.07
  4. Step 4: Simplify right side
    19,969.85x = 362,417,636.90
  5. Step 5: Solve for x
    x = 362,417,636.90/19,969.85
  6. Step 6: Final answer
    x = 18,148.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.