Home / 13,171,643.60-19,799,455.80-12,415,816.40

Finding the Fourth Proportional to 13,171,643.60, 19,799,455.80 and 12,415,816.40

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Solution

The fourth proportional to 13,171,643.60, 19,799,455.80 and 12,415,816.40 is: 18,663,305.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171,643.60 : 19,799,455.80 = 12,415,816.40 : x
  2. Step 2: Convert to fraction form
    13,171,643.60/19,799,455.80 = 12,415,816.40/x
  3. Step 3: Cross multiply
    13,171,643.60x = 19,799,455.80 × 12,415,816.40
  4. Step 4: Simplify right side
    13,171,643.60x = 245,826,408,032,715.12
  5. Step 5: Solve for x
    x = 245,826,408,032,715.12/13,171,643.60
  6. Step 6: Final answer
    x = 18,663,305.47

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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.