Home / 13,666.47-18,852.59-8,628.89

Finding the Fourth Proportional to 13,666.47, 18,852.59 and 8,628.89

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Solution

The fourth proportional to 13,666.47, 18,852.59 and 8,628.89 is: 11,903.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.47 : 18,852.59 = 8,628.89 : x
  2. Step 2: Convert to fraction form
    13,666.47/18,852.59 = 8,628.89/x
  3. Step 3: Cross multiply
    13,666.47x = 18,852.59 × 8,628.89
  4. Step 4: Simplify right side
    13,666.47x = 162,676,787.92
  5. Step 5: Solve for x
    x = 162,676,787.92/13,666.47
  6. Step 6: Final answer
    x = 11,903.35

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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.