Home / 13,827,075.20-20,740,612.80-12,457,138.40

Finding the Fourth Proportional to 13,827,075.20, 20,740,612.80 and 12,457,138.40

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Solution

The fourth proportional to 13,827,075.20, 20,740,612.80 and 12,457,138.40 is: 18,685,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,827,075.20 : 20,740,612.80 = 12,457,138.40 : x
  2. Step 2: Convert to fraction form
    13,827,075.20/20,740,612.80 = 12,457,138.40/x
  3. Step 3: Cross multiply
    13,827,075.20x = 20,740,612.80 × 12,457,138.40
  4. Step 4: Simplify right side
    13,827,075.20x = 258,368,684,150,411.53
  5. Step 5: Solve for x
    x = 258,368,684,150,411.53/13,827,075.20
  6. Step 6: Final answer
    x = 18,685,707.60

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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.