Home / 10,117.65-13,962.31-5,641.45

Finding the Fourth Proportional to 10,117.65, 13,962.31 and 5,641.45

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Solution

The fourth proportional to 10,117.65, 13,962.31 and 5,641.45 is: 7,785.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.65 : 13,962.31 = 5,641.45 : x
  2. Step 2: Convert to fraction form
    10,117.65/13,962.31 = 5,641.45/x
  3. Step 3: Cross multiply
    10,117.65x = 13,962.31 × 5,641.45
  4. Step 4: Simplify right side
    10,117.65x = 78,767,673.75
  5. Step 5: Solve for x
    x = 78,767,673.75/10,117.65
  6. Step 6: Final answer
    x = 7,785.17

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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.