Home / 13,188,260.40-19,787,056.20-12,721,700.40

Finding the Fourth Proportional to 13,188,260.40, 19,787,056.20 and 12,721,700.40

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Solution

The fourth proportional to 13,188,260.40, 19,787,056.20 and 12,721,700.40 is: 19,087,051.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,260.40 : 19,787,056.20 = 12,721,700.40 : x
  2. Step 2: Convert to fraction form
    13,188,260.40/19,787,056.20 = 12,721,700.40/x
  3. Step 3: Cross multiply
    13,188,260.40x = 19,787,056.20 × 12,721,700.40
  4. Step 4: Simplify right side
    13,188,260.40x = 251,725,000,774,362.47
  5. Step 5: Solve for x
    x = 251,725,000,774,362.47/13,188,260.40
  6. Step 6: Final answer
    x = 19,087,051.15

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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.