Home / 13,939.13-19,236.02-7,970.93

Finding the Fourth Proportional to 13,939.13, 19,236.02 and 7,970.93

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Solution

The fourth proportional to 13,939.13, 19,236.02 and 7,970.93 is: 10,999.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.13 : 19,236.02 = 7,970.93 : x
  2. Step 2: Convert to fraction form
    13,939.13/19,236.02 = 7,970.93/x
  3. Step 3: Cross multiply
    13,939.13x = 19,236.02 × 7,970.93
  4. Step 4: Simplify right side
    13,939.13x = 153,328,832.86
  5. Step 5: Solve for x
    x = 153,328,832.86/13,939.13
  6. Step 6: Final answer
    x = 10,999.89

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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.