Home / 12,947.01-17,862.81-7,280.85

Finding the Fourth Proportional to 12,947.01, 17,862.81 and 7,280.85

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Solution

The fourth proportional to 12,947.01, 17,862.81 and 7,280.85 is: 10,045.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.01 : 17,862.81 = 7,280.85 : x
  2. Step 2: Convert to fraction form
    12,947.01/17,862.81 = 7,280.85/x
  3. Step 3: Cross multiply
    12,947.01x = 17,862.81 × 7,280.85
  4. Step 4: Simplify right side
    12,947.01x = 130,056,440.19
  5. Step 5: Solve for x
    x = 130,056,440.19/12,947.01
  6. Step 6: Final answer
    x = 10,045.29

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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.