Home / 28,459.08-42,655.32-21,416.49

Finding the Fourth Proportional to 28,459.08, 42,655.32 and 21,416.49

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Solution

The fourth proportional to 28,459.08, 42,655.32 and 21,416.49 is: 32,099.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.08 : 42,655.32 = 21,416.49 : x
  2. Step 2: Convert to fraction form
    28,459.08/42,655.32 = 21,416.49/x
  3. Step 3: Cross multiply
    28,459.08x = 42,655.32 × 21,416.49
  4. Step 4: Simplify right side
    28,459.08x = 913,527,234.23
  5. Step 5: Solve for x
    x = 913,527,234.23/28,459.08
  6. Step 6: Final answer
    x = 32,099.68

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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.