Home / 28,547.16-39,432.73-21,914.75

Finding the Fourth Proportional to 28,547.16, 39,432.73 and 21,914.75

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Solution

The fourth proportional to 28,547.16, 39,432.73 and 21,914.75 is: 30,271.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.16 : 39,432.73 = 21,914.75 : x
  2. Step 2: Convert to fraction form
    28,547.16/39,432.73 = 21,914.75/x
  3. Step 3: Cross multiply
    28,547.16x = 39,432.73 × 21,914.75
  4. Step 4: Simplify right side
    28,547.16x = 864,158,419.77
  5. Step 5: Solve for x
    x = 864,158,419.77/28,547.16
  6. Step 6: Final answer
    x = 30,271.26

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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.