Home / 21,965.04-32,948.10-7,187.40

Finding the Fourth Proportional to 21,965.04, 32,948.10 and 7,187.40

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Solution

The fourth proportional to 21,965.04, 32,948.10 and 7,187.40 is: 10,781.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.04 : 32,948.10 = 7,187.40 : x
  2. Step 2: Convert to fraction form
    21,965.04/32,948.10 = 7,187.40/x
  3. Step 3: Cross multiply
    21,965.04x = 32,948.10 × 7,187.40
  4. Step 4: Simplify right side
    21,965.04x = 236,811,173.94
  5. Step 5: Solve for x
    x = 236,811,173.94/21,965.04
  6. Step 6: Final answer
    x = 10,781.28

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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.