Home / 28,547.30-39,393.55-15,799.72

Finding the Fourth Proportional to 28,547.30, 39,393.55 and 15,799.72

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Solution

The fourth proportional to 28,547.30, 39,393.55 and 15,799.72 is: 21,802.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.30 : 39,393.55 = 15,799.72 : x
  2. Step 2: Convert to fraction form
    28,547.30/39,393.55 = 15,799.72/x
  3. Step 3: Cross multiply
    28,547.30x = 39,393.55 × 15,799.72
  4. Step 4: Simplify right side
    28,547.30x = 622,406,862.84
  5. Step 5: Solve for x
    x = 622,406,862.84/28,547.30
  6. Step 6: Final answer
    x = 21,802.65

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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.