Home / 15,358.04-21,189.30-8,642.60

Finding the Fourth Proportional to 15,358.04, 21,189.30 and 8,642.60

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Solution

The fourth proportional to 15,358.04, 21,189.30 and 8,642.60 is: 11,924.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.04 : 21,189.30 = 8,642.60 : x
  2. Step 2: Convert to fraction form
    15,358.04/21,189.30 = 8,642.60/x
  3. Step 3: Cross multiply
    15,358.04x = 21,189.30 × 8,642.60
  4. Step 4: Simplify right side
    15,358.04x = 183,130,644.18
  5. Step 5: Solve for x
    x = 183,130,644.18/15,358.04
  6. Step 6: Final answer
    x = 11,924.09

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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.