Home / 15,389.07-21,238.46-9,424.68

Finding the Fourth Proportional to 15,389.07, 21,238.46 and 9,424.68

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Solution

The fourth proportional to 15,389.07, 21,238.46 and 9,424.68 is: 13,007.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.07 : 21,238.46 = 9,424.68 : x
  2. Step 2: Convert to fraction form
    15,389.07/21,238.46 = 9,424.68/x
  3. Step 3: Cross multiply
    15,389.07x = 21,238.46 × 9,424.68
  4. Step 4: Simplify right side
    15,389.07x = 200,165,689.19
  5. Step 5: Solve for x
    x = 200,165,689.19/15,389.07
  6. Step 6: Final answer
    x = 13,007.00

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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.