Home / 11,465.04-15,817.92-6,428.40

Finding the Fourth Proportional to 11,465.04, 15,817.92 and 6,428.40

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Solution

The fourth proportional to 11,465.04, 15,817.92 and 6,428.40 is: 8,869.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,465.04 : 15,817.92 = 6,428.40 : x
  2. Step 2: Convert to fraction form
    11,465.04/15,817.92 = 6,428.40/x
  3. Step 3: Cross multiply
    11,465.04x = 15,817.92 × 6,428.40
  4. Step 4: Simplify right side
    11,465.04x = 101,683,916.93
  5. Step 5: Solve for x
    x = 101,683,916.93/11,465.04
  6. Step 6: Final answer
    x = 8,869.04

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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.