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Finding the Fourth Proportional to 13,547.08, 18,692.94 and 7,957

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Solution

The fourth proportional to 13,547.08, 18,692.94 and 7,957 is: 10,979.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547.08 : 18,692.94 = 7,957 : x
  2. Step 2: Convert to fraction form
    13,547.08/18,692.94 = 7,957/x
  3. Step 3: Cross multiply
    13,547.08x = 18,692.94 × 7,957
  4. Step 4: Simplify right side
    13,547.08x = 148,739,723.58
  5. Step 5: Solve for x
    x = 148,739,723.58/13,547.08
  6. Step 6: Final answer
    x = 10,979.47

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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.