Home / 13,005,440.21-17,947,501.23-7,778,448.27

Finding the Fourth Proportional to 13,005,440.21, 17,947,501.23 and 7,778,448.27

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Solution

The fourth proportional to 13,005,440.21, 17,947,501.23 and 7,778,448.27 is: 10,734,254.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005,440.21 : 17,947,501.23 = 7,778,448.27 : x
  2. Step 2: Convert to fraction form
    13,005,440.21/17,947,501.23 = 7,778,448.27/x
  3. Step 3: Cross multiply
    13,005,440.21x = 17,947,501.23 × 7,778,448.27
  4. Step 4: Simplify right side
    13,005,440.21x = 139,603,709,893,316.38
  5. Step 5: Solve for x
    x = 139,603,709,893,316.38/13,005,440.21
  6. Step 6: Final answer
    x = 10,734,254.87

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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.