Home / 12,421.89-18,669.69-11,505.24

Finding the Fourth Proportional to 12,421.89, 18,669.69 and 11,505.24

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Solution

The fourth proportional to 12,421.89, 18,669.69 and 11,505.24 is: 17,292.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.89 : 18,669.69 = 11,505.24 : x
  2. Step 2: Convert to fraction form
    12,421.89/18,669.69 = 11,505.24/x
  3. Step 3: Cross multiply
    12,421.89x = 18,669.69 × 11,505.24
  4. Step 4: Simplify right side
    12,421.89x = 214,799,264.18
  5. Step 5: Solve for x
    x = 214,799,264.18/12,421.89
  6. Step 6: Final answer
    x = 17,292.00

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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.