Home / 13,161.77-19,648.96-12,700.46

Finding the Fourth Proportional to 13,161.77, 19,648.96 and 12,700.46

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Solution

The fourth proportional to 13,161.77, 19,648.96 and 12,700.46 is: 18,960.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.77 : 19,648.96 = 12,700.46 : x
  2. Step 2: Convert to fraction form
    13,161.77/19,648.96 = 12,700.46/x
  3. Step 3: Cross multiply
    13,161.77x = 19,648.96 × 12,700.46
  4. Step 4: Simplify right side
    13,161.77x = 249,550,830.52
  5. Step 5: Solve for x
    x = 249,550,830.52/13,161.77
  6. Step 6: Final answer
    x = 18,960.28

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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.