Home / 18,931,548.95-28,410,100.85-7,415,587.72

Finding the Fourth Proportional to 18,931,548.95, 28,410,100.85 and 7,415,587.72

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Solution

The fourth proportional to 18,931,548.95, 28,410,100.85 and 7,415,587.72 is: 11,128,386.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931,548.95 : 28,410,100.85 = 7,415,587.72 : x
  2. Step 2: Convert to fraction form
    18,931,548.95/28,410,100.85 = 7,415,587.72/x
  3. Step 3: Cross multiply
    18,931,548.95x = 28,410,100.85 × 7,415,587.72
  4. Step 4: Simplify right side
    18,931,548.95x = 210,677,594,899,626.84
  5. Step 5: Solve for x
    x = 210,677,594,899,626.84/18,931,548.95
  6. Step 6: Final answer
    x = 11,128,386.56

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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.