Home / 15,239.40-21,029.64-9,577.08

Finding the Fourth Proportional to 15,239.40, 21,029.64 and 9,577.08

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Solution

The fourth proportional to 15,239.40, 21,029.64 and 9,577.08 is: 13,215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,239.40 : 21,029.64 = 9,577.08 : x
  2. Step 2: Convert to fraction form
    15,239.40/21,029.64 = 9,577.08/x
  3. Step 3: Cross multiply
    15,239.40x = 21,029.64 × 9,577.08
  4. Step 4: Simplify right side
    15,239.40x = 201,402,544.65
  5. Step 5: Solve for x
    x = 201,402,544.65/15,239.40
  6. Step 6: Final answer
    x = 13,215.91

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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.