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Finding the Fourth Proportional to 12,928,335.30, 19,392,502.95 and 6,551,043.30

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Solution

The fourth proportional to 12,928,335.30, 19,392,502.95 and 6,551,043.30 is: 9,826,564.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928,335.30 : 19,392,502.95 = 6,551,043.30 : x
  2. Step 2: Convert to fraction form
    12,928,335.30/19,392,502.95 = 6,551,043.30/x
  3. Step 3: Cross multiply
    12,928,335.30x = 19,392,502.95 × 6,551,043.30
  4. Step 4: Simplify right side
    12,928,335.30x = 127,041,126,520,827.72
  5. Step 5: Solve for x
    x = 127,041,126,520,827.72/12,928,335.30
  6. Step 6: Final answer
    x = 9,826,564.95

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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.