Home / 12,528.89-18,795.09-5,134.40

Finding the Fourth Proportional to 12,528.89, 18,795.09 and 5,134.40

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Solution

The fourth proportional to 12,528.89, 18,795.09 and 5,134.40 is: 7,702.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.89 : 18,795.09 = 5,134.40 : x
  2. Step 2: Convert to fraction form
    12,528.89/18,795.09 = 5,134.40/x
  3. Step 3: Cross multiply
    12,528.89x = 18,795.09 × 5,134.40
  4. Step 4: Simplify right side
    12,528.89x = 96,501,510.10
  5. Step 5: Solve for x
    x = 96,501,510.10/12,528.89
  6. Step 6: Final answer
    x = 7,702.32

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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.