Home / 28,686,690.42-39,586,477.38-15,633,668.40

Finding the Fourth Proportional to 28,686,690.42, 39,586,477.38 and 15,633,668.40

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Solution

The fourth proportional to 28,686,690.42, 39,586,477.38 and 15,633,668.40 is: 21,573,832.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686,690.42 : 39,586,477.38 = 15,633,668.40 : x
  2. Step 2: Convert to fraction form
    28,686,690.42/39,586,477.38 = 15,633,668.40/x
  3. Step 3: Cross multiply
    28,686,690.42x = 39,586,477.38 × 15,633,668.40
  4. Step 4: Simplify right side
    28,686,690.42x = 618,881,860,483,020.88
  5. Step 5: Solve for x
    x = 618,881,860,483,020.88/28,686,690.42
  6. Step 6: Final answer
    x = 21,573,832.72

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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.