Home / 13,999.02-19,319.31-7,949.70

Finding the Fourth Proportional to 13,999.02, 19,319.31 and 7,949.70

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Solution

The fourth proportional to 13,999.02, 19,319.31 and 7,949.70 is: 10,970.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.02 : 19,319.31 = 7,949.70 : x
  2. Step 2: Convert to fraction form
    13,999.02/19,319.31 = 7,949.70/x
  3. Step 3: Cross multiply
    13,999.02x = 19,319.31 × 7,949.70
  4. Step 4: Simplify right side
    13,999.02x = 153,582,718.71
  5. Step 5: Solve for x
    x = 153,582,718.71/13,999.02
  6. Step 6: Final answer
    x = 10,970.96

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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.