Home / 13,938.85-19,235.55-7,565.47

Finding the Fourth Proportional to 13,938.85, 19,235.55 and 7,565.47

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Solution

The fourth proportional to 13,938.85, 19,235.55 and 7,565.47 is: 10,440.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.85 : 19,235.55 = 7,565.47 : x
  2. Step 2: Convert to fraction form
    13,938.85/19,235.55 = 7,565.47/x
  3. Step 3: Cross multiply
    13,938.85x = 19,235.55 × 7,565.47
  4. Step 4: Simplify right side
    13,938.85x = 145,525,976.46
  5. Step 5: Solve for x
    x = 145,525,976.46/13,938.85
  6. Step 6: Final answer
    x = 10,440.31

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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.