Home / 28,424.52-39,225.36-15,678.94

Finding the Fourth Proportional to 28,424.52, 39,225.36 and 15,678.94

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Solution

The fourth proportional to 28,424.52, 39,225.36 and 15,678.94 is: 21,636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.52 : 39,225.36 = 15,678.94 : x
  2. Step 2: Convert to fraction form
    28,424.52/39,225.36 = 15,678.94/x
  3. Step 3: Cross multiply
    28,424.52x = 39,225.36 × 15,678.94
  4. Step 4: Simplify right side
    28,424.52x = 615,012,210.52
  5. Step 5: Solve for x
    x = 615,012,210.52/28,424.52
  6. Step 6: Final answer
    x = 21,636.68

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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.