Home / 13,287,913.70-19,931,870.55-8,481,325.10

Finding the Fourth Proportional to 13,287,913.70, 19,931,870.55 and 8,481,325.10

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Solution

The fourth proportional to 13,287,913.70, 19,931,870.55 and 8,481,325.10 is: 12,721,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287,913.70 : 19,931,870.55 = 8,481,325.10 : x
  2. Step 2: Convert to fraction form
    13,287,913.70/19,931,870.55 = 8,481,325.10/x
  3. Step 3: Cross multiply
    13,287,913.70x = 19,931,870.55 × 8,481,325.10
  4. Step 4: Simplify right side
    13,287,913.70x = 169,048,673,985,665.81
  5. Step 5: Solve for x
    x = 169,048,673,985,665.81/13,287,913.70
  6. Step 6: Final answer
    x = 12,721,987.65

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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.