Home / 13,995.18-19,312.47-7,707.55

Finding the Fourth Proportional to 13,995.18, 19,312.47 and 7,707.55

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Solution

The fourth proportional to 13,995.18, 19,312.47 and 7,707.55 is: 10,635.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.18 : 19,312.47 = 7,707.55 : x
  2. Step 2: Convert to fraction form
    13,995.18/19,312.47 = 7,707.55/x
  3. Step 3: Cross multiply
    13,995.18x = 19,312.47 × 7,707.55
  4. Step 4: Simplify right side
    13,995.18x = 148,851,828.15
  5. Step 5: Solve for x
    x = 148,851,828.15/13,995.18
  6. Step 6: Final answer
    x = 10,635.94

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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.