Home / 30,215.61-45,338.27-13,587.39

Finding the Fourth Proportional to 30,215.61, 45,338.27 and 13,587.39

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Solution

The fourth proportional to 30,215.61, 45,338.27 and 13,587.39 is: 20,387.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.61 : 45,338.27 = 13,587.39 : x
  2. Step 2: Convert to fraction form
    30,215.61/45,338.27 = 13,587.39/x
  3. Step 3: Cross multiply
    30,215.61x = 45,338.27 × 13,587.39
  4. Step 4: Simplify right side
    30,215.61x = 616,028,688.48
  5. Step 5: Solve for x
    x = 616,028,688.48/30,215.61
  6. Step 6: Final answer
    x = 20,387.76

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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.