Home / 15,780,670.40-23,671,005.60-12,943,985.60

Finding the Fourth Proportional to 15,780,670.40, 23,671,005.60 and 12,943,985.60

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Solution

The fourth proportional to 15,780,670.40, 23,671,005.60 and 12,943,985.60 is: 19,415,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,780,670.40 : 23,671,005.60 = 12,943,985.60 : x
  2. Step 2: Convert to fraction form
    15,780,670.40/23,671,005.60 = 12,943,985.60/x
  3. Step 3: Cross multiply
    15,780,670.40x = 23,671,005.60 × 12,943,985.60
  4. Step 4: Simplify right side
    15,780,670.40x = 306,397,155,623,919.38
  5. Step 5: Solve for x
    x = 306,397,155,623,919.38/15,780,670.40
  6. Step 6: Final answer
    x = 19,415,978.40

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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.