Home / 13,579,343.91-18,739,986.48-7,779,246.72

Finding the Fourth Proportional to 13,579,343.91, 18,739,986.48 and 7,779,246.72

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Solution

The fourth proportional to 13,579,343.91, 18,739,986.48 and 7,779,246.72 is: 10,735,642.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579,343.91 : 18,739,986.48 = 7,779,246.72 : x
  2. Step 2: Convert to fraction form
    13,579,343.91/18,739,986.48 = 7,779,246.72/x
  3. Step 3: Cross multiply
    13,579,343.91x = 18,739,986.48 × 7,779,246.72
  4. Step 4: Simplify right side
    13,579,343.91x = 145,782,978,357,384.34
  5. Step 5: Solve for x
    x = 145,782,978,357,384.34/13,579,343.91
  6. Step 6: Final answer
    x = 10,735,642.26

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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.