Home / 28,035.56-38,688.36-15,459.50

Finding the Fourth Proportional to 28,035.56, 38,688.36 and 15,459.50

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Solution

The fourth proportional to 28,035.56, 38,688.36 and 15,459.50 is: 21,333.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,035.56 : 38,688.36 = 15,459.50 : x
  2. Step 2: Convert to fraction form
    28,035.56/38,688.36 = 15,459.50/x
  3. Step 3: Cross multiply
    28,035.56x = 38,688.36 × 15,459.50
  4. Step 4: Simplify right side
    28,035.56x = 598,102,701.42
  5. Step 5: Solve for x
    x = 598,102,701.42/28,035.56
  6. Step 6: Final answer
    x = 21,333.72

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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.