Home / 28,160.25-38,862.36-15,585

Finding the Fourth Proportional to 28,160.25, 38,862.36 and 15,585

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Solution

The fourth proportional to 28,160.25, 38,862.36 and 15,585 is: 21,507.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.25 : 38,862.36 = 15,585 : x
  2. Step 2: Convert to fraction form
    28,160.25/38,862.36 = 15,585/x
  3. Step 3: Cross multiply
    28,160.25x = 38,862.36 × 15,585
  4. Step 4: Simplify right side
    28,160.25x = 605,669,880.60
  5. Step 5: Solve for x
    x = 605,669,880.60/28,160.25
  6. Step 6: Final answer
    x = 21,507.97

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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.