Home / 18,411.60-25,416.56-10,855.40

Finding the Fourth Proportional to 18,411.60, 25,416.56 and 10,855.40

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Solution

The fourth proportional to 18,411.60, 25,416.56 and 10,855.40 is: 14,985.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.60 : 25,416.56 = 10,855.40 : x
  2. Step 2: Convert to fraction form
    18,411.60/25,416.56 = 10,855.40/x
  3. Step 3: Cross multiply
    18,411.60x = 25,416.56 × 10,855.40
  4. Step 4: Simplify right side
    18,411.60x = 275,906,925.42
  5. Step 5: Solve for x
    x = 275,906,925.42/18,411.60
  6. Step 6: Final answer
    x = 14,985.49

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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.