Home / 28,516.16-42,745.53-11,885.40

Finding the Fourth Proportional to 28,516.16, 42,745.53 and 11,885.40

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Solution

The fourth proportional to 28,516.16, 42,745.53 and 11,885.40 is: 17,816.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.16 : 42,745.53 = 11,885.40 : x
  2. Step 2: Convert to fraction form
    28,516.16/42,745.53 = 11,885.40/x
  3. Step 3: Cross multiply
    28,516.16x = 42,745.53 × 11,885.40
  4. Step 4: Simplify right side
    28,516.16x = 508,047,508.53
  5. Step 5: Solve for x
    x = 508,047,508.53/28,516.16
  6. Step 6: Final answer
    x = 17,816.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.