Home / 10,421,328.71-15,632,029.52-7,379,494.40

Finding the Fourth Proportional to 10,421,328.71, 15,632,029.52 and 7,379,494.40

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Solution

The fourth proportional to 10,421,328.71, 15,632,029.52 and 7,379,494.40 is: 11,069,267.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421,328.71 : 15,632,029.52 = 7,379,494.40 : x
  2. Step 2: Convert to fraction form
    10,421,328.71/15,632,029.52 = 7,379,494.40/x
  3. Step 3: Cross multiply
    10,421,328.71x = 15,632,029.52 × 7,379,494.40
  4. Step 4: Simplify right side
    10,421,328.71x = 115,356,474,188,417.06
  5. Step 5: Solve for x
    x = 115,356,474,188,417.06/10,421,328.71
  6. Step 6: Final answer
    x = 11,069,267.41

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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.