Home / 28,320.24-39,080.43-15,573.18

Finding the Fourth Proportional to 28,320.24, 39,080.43 and 15,573.18

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Solution

The fourth proportional to 28,320.24, 39,080.43 and 15,573.18 is: 21,490.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.24 : 39,080.43 = 15,573.18 : x
  2. Step 2: Convert to fraction form
    28,320.24/39,080.43 = 15,573.18/x
  3. Step 3: Cross multiply
    28,320.24x = 39,080.43 × 15,573.18
  4. Step 4: Simplify right side
    28,320.24x = 608,606,570.87
  5. Step 5: Solve for x
    x = 608,606,570.87/28,320.24
  6. Step 6: Final answer
    x = 21,490.16

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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.