Home / 12,690.07-17,501.47-10,328.11

Finding the Fourth Proportional to 12,690.07, 17,501.47 and 10,328.11

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Solution

The fourth proportional to 12,690.07, 17,501.47 and 10,328.11 is: 14,243.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.07 : 17,501.47 = 10,328.11 : x
  2. Step 2: Convert to fraction form
    12,690.07/17,501.47 = 10,328.11/x
  3. Step 3: Cross multiply
    12,690.07x = 17,501.47 × 10,328.11
  4. Step 4: Simplify right side
    12,690.07x = 180,757,037.75
  5. Step 5: Solve for x
    x = 180,757,037.75/12,690.07
  6. Step 6: Final answer
    x = 14,243.98

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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.