Home / 13,409.08-19,971.77-12,706.52

Finding the Fourth Proportional to 13,409.08, 19,971.77 and 12,706.52

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Solution

The fourth proportional to 13,409.08, 19,971.77 and 12,706.52 is: 18,925.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.08 : 19,971.77 = 12,706.52 : x
  2. Step 2: Convert to fraction form
    13,409.08/19,971.77 = 12,706.52/x
  3. Step 3: Cross multiply
    13,409.08x = 19,971.77 × 12,706.52
  4. Step 4: Simplify right side
    13,409.08x = 253,771,694.94
  5. Step 5: Solve for x
    x = 253,771,694.94/13,409.08
  6. Step 6: Final answer
    x = 18,925.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.