Home / 18,130.64-25,005.85-14,981.36

Finding the Fourth Proportional to 18,130.64, 25,005.85 and 14,981.36

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Solution

The fourth proportional to 18,130.64, 25,005.85 and 14,981.36 is: 20,662.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,130.64 : 25,005.85 = 14,981.36 : x
  2. Step 2: Convert to fraction form
    18,130.64/25,005.85 = 14,981.36/x
  3. Step 3: Cross multiply
    18,130.64x = 25,005.85 × 14,981.36
  4. Step 4: Simplify right side
    18,130.64x = 374,621,478.47
  5. Step 5: Solve for x
    x = 374,621,478.47/18,130.64
  6. Step 6: Final answer
    x = 20,662.35

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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.