Home / 18,931.12-26,124.96-10,977.96

Finding the Fourth Proportional to 18,931.12, 26,124.96 and 10,977.96

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Solution

The fourth proportional to 18,931.12, 26,124.96 and 10,977.96 is: 15,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.12 : 26,124.96 = 10,977.96 : x
  2. Step 2: Convert to fraction form
    18,931.12/26,124.96 = 10,977.96/x
  3. Step 3: Cross multiply
    18,931.12x = 26,124.96 × 10,977.96
  4. Step 4: Simplify right side
    18,931.12x = 286,798,905.02
  5. Step 5: Solve for x
    x = 286,798,905.02/18,931.12
  6. Step 6: Final answer
    x = 15,149.60

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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.