Home / 15,875.97-21,858.95-13,480.92

Finding the Fourth Proportional to 15,875.97, 21,858.95 and 13,480.92

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Solution

The fourth proportional to 15,875.97, 21,858.95 and 13,480.92 is: 18,561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.97 : 21,858.95 = 13,480.92 : x
  2. Step 2: Convert to fraction form
    15,875.97/21,858.95 = 13,480.92/x
  3. Step 3: Cross multiply
    15,875.97x = 21,858.95 × 13,480.92
  4. Step 4: Simplify right side
    15,875.97x = 294,678,688.83
  5. Step 5: Solve for x
    x = 294,678,688.83/15,875.97
  6. Step 6: Final answer
    x = 18,561.30

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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.