Home / 16,985.36-25,459.68-7,130

Finding the Fourth Proportional to 16,985.36, 25,459.68 and 7,130

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Solution

The fourth proportional to 16,985.36, 25,459.68 and 7,130 is: 10,687.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,985.36 : 25,459.68 = 7,130 : x
  2. Step 2: Convert to fraction form
    16,985.36/25,459.68 = 7,130/x
  3. Step 3: Cross multiply
    16,985.36x = 25,459.68 × 7,130
  4. Step 4: Simplify right side
    16,985.36x = 181,527,518.40
  5. Step 5: Solve for x
    x = 181,527,518.40/16,985.36
  6. Step 6: Final answer
    x = 10,687.29

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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.