Home / 20,547.84-28,345.92-12,160.32

Finding the Fourth Proportional to 20,547.84, 28,345.92 and 12,160.32

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Solution

The fourth proportional to 20,547.84, 28,345.92 and 12,160.32 is: 16,775.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,547.84 : 28,345.92 = 12,160.32 : x
  2. Step 2: Convert to fraction form
    20,547.84/28,345.92 = 12,160.32/x
  3. Step 3: Cross multiply
    20,547.84x = 28,345.92 × 12,160.32
  4. Step 4: Simplify right side
    20,547.84x = 344,695,457.89
  5. Step 5: Solve for x
    x = 344,695,457.89/20,547.84
  6. Step 6: Final answer
    x = 16,775.26

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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.