Home / 15,316.52-21,137.27-8,602.29

Finding the Fourth Proportional to 15,316.52, 21,137.27 and 8,602.29

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Solution

The fourth proportional to 15,316.52, 21,137.27 and 8,602.29 is: 11,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.52 : 21,137.27 = 8,602.29 : x
  2. Step 2: Convert to fraction form
    15,316.52/21,137.27 = 8,602.29/x
  3. Step 3: Cross multiply
    15,316.52x = 21,137.27 × 8,602.29
  4. Step 4: Simplify right side
    15,316.52x = 181,828,883.34
  5. Step 5: Solve for x
    x = 181,828,883.34/15,316.52
  6. Step 6: Final answer
    x = 11,871.43

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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.