Home / 19,719.34-27,166.44-13,740.16

Finding the Fourth Proportional to 19,719.34, 27,166.44 and 13,740.16

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Solution

The fourth proportional to 19,719.34, 27,166.44 and 13,740.16 is: 18,929.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.34 : 27,166.44 = 13,740.16 : x
  2. Step 2: Convert to fraction form
    19,719.34/27,166.44 = 13,740.16/x
  3. Step 3: Cross multiply
    19,719.34x = 27,166.44 × 13,740.16
  4. Step 4: Simplify right side
    19,719.34x = 373,271,232.23
  5. Step 5: Solve for x
    x = 373,271,232.23/19,719.34
  6. Step 6: Final answer
    x = 18,929.20

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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.