Home / 28,009.36-38,653.04-15,434.08

Finding the Fourth Proportional to 28,009.36, 38,653.04 and 15,434.08

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Solution

The fourth proportional to 28,009.36, 38,653.04 and 15,434.08 is: 21,299.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.36 : 38,653.04 = 15,434.08 : x
  2. Step 2: Convert to fraction form
    28,009.36/38,653.04 = 15,434.08/x
  3. Step 3: Cross multiply
    28,009.36x = 38,653.04 × 15,434.08
  4. Step 4: Simplify right side
    28,009.36x = 596,574,111.60
  5. Step 5: Solve for x
    x = 596,574,111.60/28,009.36
  6. Step 6: Final answer
    x = 21,299.10

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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.