Home / 28,547.30-39,432.92-21,914.89

Finding the Fourth Proportional to 28,547.30, 39,432.92 and 21,914.89

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Solution

The fourth proportional to 28,547.30, 39,432.92 and 21,914.89 is: 30,271.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.30 : 39,432.92 = 21,914.89 : x
  2. Step 2: Convert to fraction form
    28,547.30/39,432.92 = 21,914.89/x
  3. Step 3: Cross multiply
    28,547.30x = 39,432.92 × 21,914.89
  4. Step 4: Simplify right side
    28,547.30x = 864,168,104.18
  5. Step 5: Solve for x
    x = 864,168,104.18/28,547.30
  6. Step 6: Final answer
    x = 30,271.45

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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.