Home / 13,405.29-20,111.28-4,045.08

Finding the Fourth Proportional to 13,405.29, 20,111.28 and 4,045.08

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Solution

The fourth proportional to 13,405.29, 20,111.28 and 4,045.08 is: 6,068.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.29 : 20,111.28 = 4,045.08 : x
  2. Step 2: Convert to fraction form
    13,405.29/20,111.28 = 4,045.08/x
  3. Step 3: Cross multiply
    13,405.29x = 20,111.28 × 4,045.08
  4. Step 4: Simplify right side
    13,405.29x = 81,351,736.50
  5. Step 5: Solve for x
    x = 81,351,736.50/13,405.29
  6. Step 6: Final answer
    x = 6,068.63

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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.