Home / 13,117.55-19,681.25-7,856.26

Finding the Fourth Proportional to 13,117.55, 19,681.25 and 7,856.26

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Solution

The fourth proportional to 13,117.55, 19,681.25 and 7,856.26 is: 11,787.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.55 : 19,681.25 = 7,856.26 : x
  2. Step 2: Convert to fraction form
    13,117.55/19,681.25 = 7,856.26/x
  3. Step 3: Cross multiply
    13,117.55x = 19,681.25 × 7,856.26
  4. Step 4: Simplify right side
    13,117.55x = 154,620,928.64
  5. Step 5: Solve for x
    x = 154,620,928.64/13,117.55
  6. Step 6: Final answer
    x = 11,787.34

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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.