Home / 14,970,000.78-20,658,870.12-8,779,512.38

Finding the Fourth Proportional to 14,970,000.78, 20,658,870.12 and 8,779,512.38

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Solution

The fourth proportional to 14,970,000.78, 20,658,870.12 and 8,779,512.38 is: 12,115,884.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,970,000.78 : 20,658,870.12 = 8,779,512.38 : x
  2. Step 2: Convert to fraction form
    14,970,000.78/20,658,870.12 = 8,779,512.38/x
  3. Step 3: Cross multiply
    14,970,000.78x = 20,658,870.12 × 8,779,512.38
  4. Step 4: Simplify right side
    14,970,000.78x = 181,374,805,975,352.12
  5. Step 5: Solve for x
    x = 181,374,805,975,352.12/14,970,000.78
  6. Step 6: Final answer
    x = 12,115,884.87

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1.5x scale

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.