Home / 13,015.90-17,962.05-7,641.55

Finding the Fourth Proportional to 13,015.90, 17,962.05 and 7,641.55

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Solution

The fourth proportional to 13,015.90, 17,962.05 and 7,641.55 is: 10,545.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.90 : 17,962.05 = 7,641.55 : x
  2. Step 2: Convert to fraction form
    13,015.90/17,962.05 = 7,641.55/x
  3. Step 3: Cross multiply
    13,015.90x = 17,962.05 × 7,641.55
  4. Step 4: Simplify right side
    13,015.90x = 137,257,903.18
  5. Step 5: Solve for x
    x = 137,257,903.18/13,015.90
  6. Step 6: Final answer
    x = 10,545.40

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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.