Home / 12,603.12-17,389.80-7,013.04

Finding the Fourth Proportional to 12,603.12, 17,389.80 and 7,013.04

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Solution

The fourth proportional to 12,603.12, 17,389.80 and 7,013.04 is: 9,676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.12 : 17,389.80 = 7,013.04 : x
  2. Step 2: Convert to fraction form
    12,603.12/17,389.80 = 7,013.04/x
  3. Step 3: Cross multiply
    12,603.12x = 17,389.80 × 7,013.04
  4. Step 4: Simplify right side
    12,603.12x = 121,955,362.99
  5. Step 5: Solve for x
    x = 121,955,362.99/12,603.12
  6. Step 6: Final answer
    x = 9,676.60

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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.