Home / 30,485.31-42,071.36-17,055.76

Finding the Fourth Proportional to 30,485.31, 42,071.36 and 17,055.76

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Solution

The fourth proportional to 30,485.31, 42,071.36 and 17,055.76 is: 23,537.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,485.31 : 42,071.36 = 17,055.76 : x
  2. Step 2: Convert to fraction form
    30,485.31/42,071.36 = 17,055.76/x
  3. Step 3: Cross multiply
    30,485.31x = 42,071.36 × 17,055.76
  4. Step 4: Simplify right side
    30,485.31x = 717,559,019.03
  5. Step 5: Solve for x
    x = 717,559,019.03/30,485.31
  6. Step 6: Final answer
    x = 23,537.86

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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.