Home / 18,312.89-25,271.63-10,355.39

Finding the Fourth Proportional to 18,312.89, 25,271.63 and 10,355.39

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Solution

The fourth proportional to 18,312.89, 25,271.63 and 10,355.39 is: 14,290.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.89 : 25,271.63 = 10,355.39 : x
  2. Step 2: Convert to fraction form
    18,312.89/25,271.63 = 10,355.39/x
  3. Step 3: Cross multiply
    18,312.89x = 25,271.63 × 10,355.39
  4. Step 4: Simplify right side
    18,312.89x = 261,697,682.20
  5. Step 5: Solve for x
    x = 261,697,682.20/18,312.89
  6. Step 6: Final answer
    x = 14,290.36

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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.