Home / 10,122.71-13,968.70-5,646.74

Finding the Fourth Proportional to 10,122.71, 13,968.70 and 5,646.74

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Solution

The fourth proportional to 10,122.71, 13,968.70 and 5,646.74 is: 7,792.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.71 : 13,968.70 = 5,646.74 : x
  2. Step 2: Convert to fraction form
    10,122.71/13,968.70 = 5,646.74/x
  3. Step 3: Cross multiply
    10,122.71x = 13,968.70 × 5,646.74
  4. Step 4: Simplify right side
    10,122.71x = 78,877,637.84
  5. Step 5: Solve for x
    x = 78,877,637.84/10,122.71
  6. Step 6: Final answer
    x = 7,792.15

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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.