Home / 13,080,920.70-19,621,381.05-12,528,047.10

Finding the Fourth Proportional to 13,080,920.70, 19,621,381.05 and 12,528,047.10

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Solution

The fourth proportional to 13,080,920.70, 19,621,381.05 and 12,528,047.10 is: 18,792,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080,920.70 : 19,621,381.05 = 12,528,047.10 : x
  2. Step 2: Convert to fraction form
    13,080,920.70/19,621,381.05 = 12,528,047.10/x
  3. Step 3: Cross multiply
    13,080,920.70x = 19,621,381.05 × 12,528,047.10
  4. Step 4: Simplify right side
    13,080,920.70x = 245,817,585,961,447.47
  5. Step 5: Solve for x
    x = 245,817,585,961,447.47/13,080,920.70
  6. Step 6: Final answer
    x = 18,792,070.65

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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.