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Finding the Fourth Proportional to 21,725.58, 32,587.80 and 6,935.40

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Solution

The fourth proportional to 21,725.58, 32,587.80 and 6,935.40 is: 10,402.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,725.58 : 32,587.80 = 6,935.40 : x
  2. Step 2: Convert to fraction form
    21,725.58/32,587.80 = 6,935.40/x
  3. Step 3: Cross multiply
    21,725.58x = 32,587.80 × 6,935.40
  4. Step 4: Simplify right side
    21,725.58x = 226,009,428.12
  5. Step 5: Solve for x
    x = 226,009,428.12/21,725.58
  6. Step 6: Final answer
    x = 10,402.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.