Home / 13,818.79-19,070.44-7,851.47

Finding the Fourth Proportional to 13,818.79, 19,070.44 and 7,851.47

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Solution

The fourth proportional to 13,818.79, 19,070.44 and 7,851.47 is: 10,835.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.79 : 19,070.44 = 7,851.47 : x
  2. Step 2: Convert to fraction form
    13,818.79/19,070.44 = 7,851.47/x
  3. Step 3: Cross multiply
    13,818.79x = 19,070.44 × 7,851.47
  4. Step 4: Simplify right side
    13,818.79x = 149,730,852.94
  5. Step 5: Solve for x
    x = 149,730,852.94/13,818.79
  6. Step 6: Final answer
    x = 10,835.31

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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.