Home / 21,036.08-31,575.51-10,513.65

Finding the Fourth Proportional to 21,036.08, 31,575.51 and 10,513.65

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Solution

The fourth proportional to 21,036.08, 31,575.51 and 10,513.65 is: 15,781.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036.08 : 31,575.51 = 10,513.65 : x
  2. Step 2: Convert to fraction form
    21,036.08/31,575.51 = 10,513.65/x
  3. Step 3: Cross multiply
    21,036.08x = 31,575.51 × 10,513.65
  4. Step 4: Simplify right side
    21,036.08x = 331,973,742.30
  5. Step 5: Solve for x
    x = 331,973,742.30/21,036.08
  6. Step 6: Final answer
    x = 15,781.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.