Home / 31,223.90-43,090.55-18,484.40

Finding the Fourth Proportional to 31,223.90, 43,090.55 and 18,484.40

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Solution

The fourth proportional to 31,223.90, 43,090.55 and 18,484.40 is: 25,509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,223.90 : 43,090.55 = 18,484.40 : x
  2. Step 2: Convert to fraction form
    31,223.90/43,090.55 = 18,484.40/x
  3. Step 3: Cross multiply
    31,223.90x = 43,090.55 × 18,484.40
  4. Step 4: Simplify right side
    31,223.90x = 796,502,793.18
  5. Step 5: Solve for x
    x = 796,502,793.18/31,223.90
  6. Step 6: Final answer
    x = 25,509.40

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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.