Home / 28,105.53-38,792.12-18,547.13

Finding the Fourth Proportional to 28,105.53, 38,792.12 and 18,547.13

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Solution

The fourth proportional to 28,105.53, 38,792.12 and 18,547.13 is: 25,599.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,105.53 : 38,792.12 = 18,547.13 : x
  2. Step 2: Convert to fraction form
    28,105.53/38,792.12 = 18,547.13/x
  3. Step 3: Cross multiply
    28,105.53x = 38,792.12 × 18,547.13
  4. Step 4: Simplify right side
    28,105.53x = 719,482,205.92
  5. Step 5: Solve for x
    x = 719,482,205.92/28,105.53
  6. Step 6: Final answer
    x = 25,599.31

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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.