Home / 15,013.63-20,718.52-9,708.31

Finding the Fourth Proportional to 15,013.63, 20,718.52 and 9,708.31

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Solution

The fourth proportional to 15,013.63, 20,718.52 and 9,708.31 is: 13,397.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,013.63 : 20,718.52 = 9,708.31 : x
  2. Step 2: Convert to fraction form
    15,013.63/20,718.52 = 9,708.31/x
  3. Step 3: Cross multiply
    15,013.63x = 20,718.52 × 9,708.31
  4. Step 4: Simplify right side
    15,013.63x = 201,141,814.90
  5. Step 5: Solve for x
    x = 201,141,814.90/15,013.63
  6. Step 6: Final answer
    x = 13,397.28

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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.