Home / 15,288.47-21,088.35-11,045.75

Finding the Fourth Proportional to 15,288.47, 21,088.35 and 11,045.75

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Solution

The fourth proportional to 15,288.47, 21,088.35 and 11,045.75 is: 15,236.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288.47 : 21,088.35 = 11,045.75 : x
  2. Step 2: Convert to fraction form
    15,288.47/21,088.35 = 11,045.75/x
  3. Step 3: Cross multiply
    15,288.47x = 21,088.35 × 11,045.75
  4. Step 4: Simplify right side
    15,288.47x = 232,936,536.57
  5. Step 5: Solve for x
    x = 232,936,536.57/15,288.47
  6. Step 6: Final answer
    x = 15,236.10

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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.