Home / 38,985.36-53,758.26-31,423.74

Finding the Fourth Proportional to 38,985.36, 53,758.26 and 31,423.74

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Solution

The fourth proportional to 38,985.36, 53,758.26 and 31,423.74 is: 43,331.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985.36 : 53,758.26 = 31,423.74 : x
  2. Step 2: Convert to fraction form
    38,985.36/53,758.26 = 31,423.74/x
  3. Step 3: Cross multiply
    38,985.36x = 53,758.26 × 31,423.74
  4. Step 4: Simplify right side
    38,985.36x = 1,689,285,585.09
  5. Step 5: Solve for x
    x = 1,689,285,585.09/38,985.36
  6. Step 6: Final answer
    x = 43,331.28

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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.