Home / 12,477.81-18,603.20-11,075.40

Finding the Fourth Proportional to 12,477.81, 18,603.20 and 11,075.40

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Solution

The fourth proportional to 12,477.81, 18,603.20 and 11,075.40 is: 16,512.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.81 : 18,603.20 = 11,075.40 : x
  2. Step 2: Convert to fraction form
    12,477.81/18,603.20 = 11,075.40/x
  3. Step 3: Cross multiply
    12,477.81x = 18,603.20 × 11,075.40
  4. Step 4: Simplify right side
    12,477.81x = 206,037,908.97
  5. Step 5: Solve for x
    x = 206,037,908.97/12,477.81
  6. Step 6: Final answer
    x = 16,512.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.