Home / 21,159,432.72-31,742,138.04-6,779,136.60

Finding the Fourth Proportional to 21,159,432.72, 31,742,138.04 and 6,779,136.60

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Solution

The fourth proportional to 21,159,432.72, 31,742,138.04 and 6,779,136.60 is: 10,169,662.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159,432.72 : 31,742,138.04 = 6,779,136.60 : x
  2. Step 2: Convert to fraction form
    21,159,432.72/31,742,138.04 = 6,779,136.60/x
  3. Step 3: Cross multiply
    21,159,432.72x = 31,742,138.04 × 6,779,136.60
  4. Step 4: Simplify right side
    21,159,432.72x = 215,184,289,749,216.25
  5. Step 5: Solve for x
    x = 215,184,289,749,216.25/21,159,432.72
  6. Step 6: Final answer
    x = 10,169,662.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.