Home / 13,535.89-18,679.95-7,567.81

Finding the Fourth Proportional to 13,535.89, 18,679.95 and 7,567.81

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Solution

The fourth proportional to 13,535.89, 18,679.95 and 7,567.81 is: 10,443.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,535.89 : 18,679.95 = 7,567.81 : x
  2. Step 2: Convert to fraction form
    13,535.89/18,679.95 = 7,567.81/x
  3. Step 3: Cross multiply
    13,535.89x = 18,679.95 × 7,567.81
  4. Step 4: Simplify right side
    13,535.89x = 141,366,312.41
  5. Step 5: Solve for x
    x = 141,366,312.41/13,535.89
  6. Step 6: Final answer
    x = 10,443.81

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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.