Home / 15,613.04-21,519.75-11,835

Finding the Fourth Proportional to 15,613.04, 21,519.75 and 11,835

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Solution

The fourth proportional to 15,613.04, 21,519.75 and 11,835 is: 16,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.04 : 21,519.75 = 11,835 : x
  2. Step 2: Convert to fraction form
    15,613.04/21,519.75 = 11,835/x
  3. Step 3: Cross multiply
    15,613.04x = 21,519.75 × 11,835
  4. Step 4: Simplify right side
    15,613.04x = 254,686,241.25
  5. Step 5: Solve for x
    x = 254,686,241.25/15,613.04
  6. Step 6: Final answer
    x = 16,312.40

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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.