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Finding the Fourth Proportional to 17,985.55, 26,980.19 and 6,901.51

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Solution

The fourth proportional to 17,985.55, 26,980.19 and 6,901.51 is: 10,352.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,985.55 : 26,980.19 = 6,901.51 : x
  2. Step 2: Convert to fraction form
    17,985.55/26,980.19 = 6,901.51/x
  3. Step 3: Cross multiply
    17,985.55x = 26,980.19 × 6,901.51
  4. Step 4: Simplify right side
    17,985.55x = 186,204,051.09
  5. Step 5: Solve for x
    x = 186,204,051.09/17,985.55
  6. Step 6: Final answer
    x = 10,352.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.