Home / 31,783.90-43,859.35-18,349.02

Finding the Fourth Proportional to 31,783.90, 43,859.35 and 18,349.02

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Solution

The fourth proportional to 31,783.90, 43,859.35 and 18,349.02 is: 25,320.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,783.90 : 43,859.35 = 18,349.02 : x
  2. Step 2: Convert to fraction form
    31,783.90/43,859.35 = 18,349.02/x
  3. Step 3: Cross multiply
    31,783.90x = 43,859.35 × 18,349.02
  4. Step 4: Simplify right side
    31,783.90x = 804,776,090.34
  5. Step 5: Solve for x
    x = 804,776,090.34/31,783.90
  6. Step 6: Final answer
    x = 25,320.24

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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.