Home / 15,784,051.56-21,783,828.86-13,130,210.97

Finding the Fourth Proportional to 15,784,051.56, 21,783,828.86 and 13,130,210.97

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Solution

The fourth proportional to 15,784,051.56, 21,783,828.86 and 13,130,210.97 is: 18,121,219.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,784,051.56 : 21,783,828.86 = 13,130,210.97 : x
  2. Step 2: Convert to fraction form
    15,784,051.56/21,783,828.86 = 13,130,210.97/x
  3. Step 3: Cross multiply
    15,784,051.56x = 21,783,828.86 × 13,130,210.97
  4. Step 4: Simplify right side
    15,784,051.56x = 286,026,268,649,761.88
  5. Step 5: Solve for x
    x = 286,026,268,649,761.88/15,784,051.56
  6. Step 6: Final answer
    x = 18,121,219.86

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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.