Home / 18,913.61-26,100.56-10,415.55

Finding the Fourth Proportional to 18,913.61, 26,100.56 and 10,415.55

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Solution

The fourth proportional to 18,913.61, 26,100.56 and 10,415.55 is: 14,373.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.61 : 26,100.56 = 10,415.55 : x
  2. Step 2: Convert to fraction form
    18,913.61/26,100.56 = 10,415.55/x
  3. Step 3: Cross multiply
    18,913.61x = 26,100.56 × 10,415.55
  4. Step 4: Simplify right side
    18,913.61x = 271,851,635.63
  5. Step 5: Solve for x
    x = 271,851,635.63/18,913.61
  6. Step 6: Final answer
    x = 14,373.34

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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.