Home / 28,987,880.40-40,003,405.20-15,935,981.04

Finding the Fourth Proportional to 28,987,880.40, 40,003,405.20 and 15,935,981.04

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Solution

The fourth proportional to 28,987,880.40, 40,003,405.20 and 15,935,981.04 is: 21,991,725.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987,880.40 : 40,003,405.20 = 15,935,981.04 : x
  2. Step 2: Convert to fraction form
    28,987,880.40/40,003,405.20 = 15,935,981.04/x
  3. Step 3: Cross multiply
    28,987,880.40x = 40,003,405.20 × 15,935,981.04
  4. Step 4: Simplify right side
    28,987,880.40x = 637,493,506,802,637.38
  5. Step 5: Solve for x
    x = 637,493,506,802,637.38/28,987,880.40
  6. Step 6: Final answer
    x = 21,991,725.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.