Home / 18,756.64-25,877.84-12,386.40

Finding the Fourth Proportional to 18,756.64, 25,877.84 and 12,386.40

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Solution

The fourth proportional to 18,756.64, 25,877.84 and 12,386.40 is: 17,089.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756.64 : 25,877.84 = 12,386.40 : x
  2. Step 2: Convert to fraction form
    18,756.64/25,877.84 = 12,386.40/x
  3. Step 3: Cross multiply
    18,756.64x = 25,877.84 × 12,386.40
  4. Step 4: Simplify right side
    18,756.64x = 320,533,277.38
  5. Step 5: Solve for x
    x = 320,533,277.38/18,756.64
  6. Step 6: Final answer
    x = 17,089.06

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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.