Home / 28,445.63-39,254.99-15,870.38

Finding the Fourth Proportional to 28,445.63, 39,254.99 and 15,870.38

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Solution

The fourth proportional to 28,445.63, 39,254.99 and 15,870.38 is: 21,901.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.63 : 39,254.99 = 15,870.38 : x
  2. Step 2: Convert to fraction form
    28,445.63/39,254.99 = 15,870.38/x
  3. Step 3: Cross multiply
    28,445.63x = 39,254.99 × 15,870.38
  4. Step 4: Simplify right side
    28,445.63x = 622,991,332.57
  5. Step 5: Solve for x
    x = 622,991,332.57/28,445.63
  6. Step 6: Final answer
    x = 21,901.13

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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.