Home / 13,590,148.40-20,408,842.20-7,212,856.40

Finding the Fourth Proportional to 13,590,148.40, 20,408,842.20 and 7,212,856.40

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Solution

The fourth proportional to 13,590,148.40, 20,408,842.20 and 7,212,856.40 is: 10,831,820.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590,148.40 : 20,408,842.20 = 7,212,856.40 : x
  2. Step 2: Convert to fraction form
    13,590,148.40/20,408,842.20 = 7,212,856.40/x
  3. Step 3: Cross multiply
    13,590,148.40x = 20,408,842.20 × 7,212,856.40
  4. Step 4: Simplify right side
    13,590,148.40x = 147,206,048,078,860.09
  5. Step 5: Solve for x
    x = 147,206,048,078,860.09/13,590,148.40
  6. Step 6: Final answer
    x = 10,831,820.50

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1.5x scale

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.