Home / 21,783.93-30,071.03-14,719.92

Finding the Fourth Proportional to 21,783.93, 30,071.03 and 14,719.92

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Solution

The fourth proportional to 21,783.93, 30,071.03 and 14,719.92 is: 20,319.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783.93 : 30,071.03 = 14,719.92 : x
  2. Step 2: Convert to fraction form
    21,783.93/30,071.03 = 14,719.92/x
  3. Step 3: Cross multiply
    21,783.93x = 30,071.03 × 14,719.92
  4. Step 4: Simplify right side
    21,783.93x = 442,643,082.32
  5. Step 5: Solve for x
    x = 442,643,082.32/21,783.93
  6. Step 6: Final answer
    x = 20,319.71

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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.