Home / 28,280.32-39,068.76-18,612.57

Finding the Fourth Proportional to 28,280.32, 39,068.76 and 18,612.57

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Solution

The fourth proportional to 28,280.32, 39,068.76 and 18,612.57 is: 25,712.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.32 : 39,068.76 = 18,612.57 : x
  2. Step 2: Convert to fraction form
    28,280.32/39,068.76 = 18,612.57/x
  3. Step 3: Cross multiply
    28,280.32x = 39,068.76 × 18,612.57
  4. Step 4: Simplify right side
    28,280.32x = 727,170,030.31
  5. Step 5: Solve for x
    x = 727,170,030.31/28,280.32
  6. Step 6: Final answer
    x = 25,712.94

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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.