Home / 13,985.49-20,972.08-7,410.16

Finding the Fourth Proportional to 13,985.49, 20,972.08 and 7,410.16

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Solution

The fourth proportional to 13,985.49, 20,972.08 and 7,410.16 is: 11,111.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.49 : 20,972.08 = 7,410.16 : x
  2. Step 2: Convert to fraction form
    13,985.49/20,972.08 = 7,410.16/x
  3. Step 3: Cross multiply
    13,985.49x = 20,972.08 × 7,410.16
  4. Step 4: Simplify right side
    13,985.49x = 155,406,468.33
  5. Step 5: Solve for x
    x = 155,406,468.33/13,985.49
  6. Step 6: Final answer
    x = 11,111.98

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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.