Home / 28,509.36-39,343.56-15,934.08

Finding the Fourth Proportional to 28,509.36, 39,343.56 and 15,934.08

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Solution

The fourth proportional to 28,509.36, 39,343.56 and 15,934.08 is: 21,989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.36 : 39,343.56 = 15,934.08 : x
  2. Step 2: Convert to fraction form
    28,509.36/39,343.56 = 15,934.08/x
  3. Step 3: Cross multiply
    28,509.36x = 39,343.56 × 15,934.08
  4. Step 4: Simplify right side
    28,509.36x = 626,903,432.52
  5. Step 5: Solve for x
    x = 626,903,432.52/28,509.36
  6. Step 6: Final answer
    x = 21,989.39

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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.