Home / 13,313.07-19,935.45-12,918.90

Finding the Fourth Proportional to 13,313.07, 19,935.45 and 12,918.90

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Solution

The fourth proportional to 13,313.07, 19,935.45 and 12,918.90 is: 19,345.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.07 : 19,935.45 = 12,918.90 : x
  2. Step 2: Convert to fraction form
    13,313.07/19,935.45 = 12,918.90/x
  3. Step 3: Cross multiply
    13,313.07x = 19,935.45 × 12,918.90
  4. Step 4: Simplify right side
    13,313.07x = 257,544,085.01
  5. Step 5: Solve for x
    x = 257,544,085.01/13,313.07
  6. Step 6: Final answer
    x = 19,345.21

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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.