Home / 38,459.20-57,688.80-28,014.40

Finding the Fourth Proportional to 38,459.20, 57,688.80 and 28,014.40

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Solution

The fourth proportional to 38,459.20, 57,688.80 and 28,014.40 is: 42,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,459.20 : 57,688.80 = 28,014.40 : x
  2. Step 2: Convert to fraction form
    38,459.20/57,688.80 = 28,014.40/x
  3. Step 3: Cross multiply
    38,459.20x = 57,688.80 × 28,014.40
  4. Step 4: Simplify right side
    38,459.20x = 1,616,117,118.72
  5. Step 5: Solve for x
    x = 1,616,117,118.72/38,459.20
  6. Step 6: Final answer
    x = 42,021.60

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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.