Home / 31,388.81-47,090.16-10,335.34

Finding the Fourth Proportional to 31,388.81, 47,090.16 and 10,335.34

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Solution

The fourth proportional to 31,388.81, 47,090.16 and 10,335.34 is: 15,505.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,388.81 : 47,090.16 = 10,335.34 : x
  2. Step 2: Convert to fraction form
    31,388.81/47,090.16 = 10,335.34/x
  3. Step 3: Cross multiply
    31,388.81x = 47,090.16 × 10,335.34
  4. Step 4: Simplify right side
    31,388.81x = 486,692,814.25
  5. Step 5: Solve for x
    x = 486,692,814.25/31,388.81
  6. Step 6: Final answer
    x = 15,505.30

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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.