Home / 28,639.95-39,510.17-18,570.93

Finding the Fourth Proportional to 28,639.95, 39,510.17 and 18,570.93

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Solution

The fourth proportional to 28,639.95, 39,510.17 and 18,570.93 is: 25,619.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.95 : 39,510.17 = 18,570.93 : x
  2. Step 2: Convert to fraction form
    28,639.95/39,510.17 = 18,570.93/x
  3. Step 3: Cross multiply
    28,639.95x = 39,510.17 × 18,570.93
  4. Step 4: Simplify right side
    28,639.95x = 733,740,508.50
  5. Step 5: Solve for x
    x = 733,740,508.50/28,639.95
  6. Step 6: Final answer
    x = 25,619.48

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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.