Home / 28,459.68-39,276-15,884.52

Finding the Fourth Proportional to 28,459.68, 39,276 and 15,884.52

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Solution

The fourth proportional to 28,459.68, 39,276 and 15,884.52 is: 21,921.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.68 : 39,276 = 15,884.52 : x
  2. Step 2: Convert to fraction form
    28,459.68/39,276 = 15,884.52/x
  3. Step 3: Cross multiply
    28,459.68x = 39,276 × 15,884.52
  4. Step 4: Simplify right side
    28,459.68x = 623,880,407.52
  5. Step 5: Solve for x
    x = 623,880,407.52/28,459.68
  6. Step 6: Final answer
    x = 21,921.55

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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.