Home / 8,739,878.40-13,114,517.76-8,421,759.36

Finding the Fourth Proportional to 8,739,878.40, 13,114,517.76 and 8,421,759.36

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Solution

The fourth proportional to 8,739,878.40, 13,114,517.76 and 8,421,759.36 is: 12,637,168.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739,878.40 : 13,114,517.76 = 8,421,759.36 : x
  2. Step 2: Convert to fraction form
    8,739,878.40/13,114,517.76 = 8,421,759.36/x
  3. Step 3: Cross multiply
    8,739,878.40x = 13,114,517.76 × 8,421,759.36
  4. Step 4: Simplify right side
    8,739,878.40x = 110,447,312,697,166.22
  5. Step 5: Solve for x
    x = 110,447,312,697,166.22/8,739,878.40
  6. Step 6: Final answer
    x = 12,637,168.12

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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.