Home / 13,938.27-19,235.13-7,970.49

Finding the Fourth Proportional to 13,938.27, 19,235.13 and 7,970.49

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Solution

The fourth proportional to 13,938.27, 19,235.13 and 7,970.49 is: 10,999.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.27 : 19,235.13 = 7,970.49 : x
  2. Step 2: Convert to fraction form
    13,938.27/19,235.13 = 7,970.49/x
  3. Step 3: Cross multiply
    13,938.27x = 19,235.13 × 7,970.49
  4. Step 4: Simplify right side
    13,938.27x = 153,313,411.31
  5. Step 5: Solve for x
    x = 153,313,411.31/13,938.27
  6. Step 6: Final answer
    x = 10,999.46

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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.