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Finding the Fourth Proportional to 38,784.42, 58,164.03 and 15,090.30

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Solution

The fourth proportional to 38,784.42, 58,164.03 and 15,090.30 is: 22,630.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,784.42 : 58,164.03 = 15,090.30 : x
  2. Step 2: Convert to fraction form
    38,784.42/58,164.03 = 15,090.30/x
  3. Step 3: Cross multiply
    38,784.42x = 58,164.03 × 15,090.30
  4. Step 4: Simplify right side
    38,784.42x = 877,712,661.91
  5. Step 5: Solve for x
    x = 877,712,661.91/38,784.42
  6. Step 6: Final answer
    x = 22,630.55

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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.