Home / 28,031,477.40-42,047,216.10-12,885,408.90

Finding the Fourth Proportional to 28,031,477.40, 42,047,216.10 and 12,885,408.90

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Solution

The fourth proportional to 28,031,477.40, 42,047,216.10 and 12,885,408.90 is: 19,328,113.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031,477.40 : 42,047,216.10 = 12,885,408.90 : x
  2. Step 2: Convert to fraction form
    28,031,477.40/42,047,216.10 = 12,885,408.90/x
  3. Step 3: Cross multiply
    28,031,477.40x = 42,047,216.10 × 12,885,408.90
  4. Step 4: Simplify right side
    28,031,477.40x = 541,795,572,555,163.31
  5. Step 5: Solve for x
    x = 541,795,572,555,163.31/28,031,477.40
  6. Step 6: Final answer
    x = 19,328,113.35

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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.