Home / 20,740.14-31,090.77-10,340.46

Finding the Fourth Proportional to 20,740.14, 31,090.77 and 10,340.46

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Solution

The fourth proportional to 20,740.14, 31,090.77 and 10,340.46 is: 15,501.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.14 : 31,090.77 = 10,340.46 : x
  2. Step 2: Convert to fraction form
    20,740.14/31,090.77 = 10,340.46/x
  3. Step 3: Cross multiply
    20,740.14x = 31,090.77 × 10,340.46
  4. Step 4: Simplify right side
    20,740.14x = 321,492,863.55
  5. Step 5: Solve for x
    x = 321,492,863.55/20,740.14
  6. Step 6: Final answer
    x = 15,501.00

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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.