Home / 18,816.40-25,966.93-10,319.30

Finding the Fourth Proportional to 18,816.40, 25,966.93 and 10,319.30

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Solution

The fourth proportional to 18,816.40, 25,966.93 and 10,319.30 is: 14,240.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.40 : 25,966.93 = 10,319.30 : x
  2. Step 2: Convert to fraction form
    18,816.40/25,966.93 = 10,319.30/x
  3. Step 3: Cross multiply
    18,816.40x = 25,966.93 × 10,319.30
  4. Step 4: Simplify right side
    18,816.40x = 267,960,385.12
  5. Step 5: Solve for x
    x = 267,960,385.12/18,816.40
  6. Step 6: Final answer
    x = 14,240.79

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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.