Home / 15,255,939.80-21,053,366.29-8,977,854.72

Finding the Fourth Proportional to 15,255,939.80, 21,053,366.29 and 8,977,854.72

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Solution

The fourth proportional to 15,255,939.80, 21,053,366.29 and 8,977,854.72 is: 12,389,539.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,255,939.80 : 21,053,366.29 = 8,977,854.72 : x
  2. Step 2: Convert to fraction form
    15,255,939.80/21,053,366.29 = 8,977,854.72/x
  3. Step 3: Cross multiply
    15,255,939.80x = 21,053,366.29 × 8,977,854.72
  4. Step 4: Simplify right side
    15,255,939.80x = 189,014,064,008,737.88
  5. Step 5: Solve for x
    x = 189,014,064,008,737.88/15,255,939.80
  6. Step 6: Final answer
    x = 12,389,539.19

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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.