Home / 21,087,030.10-31,567,559.55-12,562,978.90

Finding the Fourth Proportional to 21,087,030.10, 31,567,559.55 and 12,562,978.90

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Solution

The fourth proportional to 21,087,030.10, 31,567,559.55 and 12,562,978.90 is: 18,806,943.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087,030.10 : 31,567,559.55 = 12,562,978.90 : x
  2. Step 2: Convert to fraction form
    21,087,030.10/31,567,559.55 = 12,562,978.90/x
  3. Step 3: Cross multiply
    21,087,030.10x = 31,567,559.55 × 12,562,978.90
  4. Step 4: Simplify right side
    21,087,030.10x = 396,582,584,551,143.50
  5. Step 5: Solve for x
    x = 396,582,584,551,143.50/21,087,030.10
  6. Step 6: Final answer
    x = 18,806,943.54

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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.