Home / 13,820.34-19,071.36-7,851.18

Finding the Fourth Proportional to 13,820.34, 19,071.36 and 7,851.18

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Solution

The fourth proportional to 13,820.34, 19,071.36 and 7,851.18 is: 10,834.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.34 : 19,071.36 = 7,851.18 : x
  2. Step 2: Convert to fraction form
    13,820.34/19,071.36 = 7,851.18/x
  3. Step 3: Cross multiply
    13,820.34x = 19,071.36 × 7,851.18
  4. Step 4: Simplify right side
    13,820.34x = 149,732,680.20
  5. Step 5: Solve for x
    x = 149,732,680.20/13,820.34
  6. Step 6: Final answer
    x = 10,834.23

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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.