Home / 28,138,953.40-42,178,881.30-17,911,647.16

Finding the Fourth Proportional to 28,138,953.40, 42,178,881.30 and 17,911,647.16

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Solution

The fourth proportional to 28,138,953.40, 42,178,881.30 and 17,911,647.16 is: 26,848,661.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138,953.40 : 42,178,881.30 = 17,911,647.16 : x
  2. Step 2: Convert to fraction form
    28,138,953.40/42,178,881.30 = 17,911,647.16/x
  3. Step 3: Cross multiply
    28,138,953.40x = 42,178,881.30 × 17,911,647.16
  4. Step 4: Simplify right side
    28,138,953.40x = 755,493,239,449,122
  5. Step 5: Solve for x
    x = 755,493,239,449,122/28,138,953.40
  6. Step 6: Final answer
    x = 26,848,661.67

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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.