Home / 31,036.60-42,830.44-16,889.36

Finding the Fourth Proportional to 31,036.60, 42,830.44 and 16,889.36

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Solution

The fourth proportional to 31,036.60, 42,830.44 and 16,889.36 is: 23,307.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,036.60 : 42,830.44 = 16,889.36 : x
  2. Step 2: Convert to fraction form
    31,036.60/42,830.44 = 16,889.36/x
  3. Step 3: Cross multiply
    31,036.60x = 42,830.44 × 16,889.36
  4. Step 4: Simplify right side
    31,036.60x = 723,378,720.12
  5. Step 5: Solve for x
    x = 723,378,720.12/31,036.60
  6. Step 6: Final answer
    x = 23,307.28

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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.