Home / 18,686.63-25,787.57-10,303.13

Finding the Fourth Proportional to 18,686.63, 25,787.57 and 10,303.13

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Solution

The fourth proportional to 18,686.63, 25,787.57 and 10,303.13 is: 14,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.63 : 25,787.57 = 10,303.13 : x
  2. Step 2: Convert to fraction form
    18,686.63/25,787.57 = 10,303.13/x
  3. Step 3: Cross multiply
    18,686.63x = 25,787.57 × 10,303.13
  4. Step 4: Simplify right side
    18,686.63x = 265,692,505.64
  5. Step 5: Solve for x
    x = 265,692,505.64/18,686.63
  6. Step 6: Final answer
    x = 14,218.32

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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.