Home / 13,941.72-19,240.80-7,655.40

Finding the Fourth Proportional to 13,941.72, 19,240.80 and 7,655.40

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Solution

The fourth proportional to 13,941.72, 19,240.80 and 7,655.40 is: 10,565.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941.72 : 19,240.80 = 7,655.40 : x
  2. Step 2: Convert to fraction form
    13,941.72/19,240.80 = 7,655.40/x
  3. Step 3: Cross multiply
    13,941.72x = 19,240.80 × 7,655.40
  4. Step 4: Simplify right side
    13,941.72x = 147,296,020.32
  5. Step 5: Solve for x
    x = 147,296,020.32/13,941.72
  6. Step 6: Final answer
    x = 10,565.13

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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.