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Finding the Fourth Proportional to 36,498.80, 54,698.56 and 15,421.40

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Solution

The fourth proportional to 36,498.80, 54,698.56 and 15,421.40 is: 23,111.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,498.80 : 54,698.56 = 15,421.40 : x
  2. Step 2: Convert to fraction form
    36,498.80/54,698.56 = 15,421.40/x
  3. Step 3: Cross multiply
    36,498.80x = 54,698.56 × 15,421.40
  4. Step 4: Simplify right side
    36,498.80x = 843,528,373.18
  5. Step 5: Solve for x
    x = 843,528,373.18/36,498.80
  6. Step 6: Final answer
    x = 23,111.13

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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.