Home / 15,768.47-21,768.93-12,358.46

Finding the Fourth Proportional to 15,768.47, 21,768.93 and 12,358.46

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Solution

The fourth proportional to 15,768.47, 21,768.93 and 12,358.46 is: 17,061.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.47 : 21,768.93 = 12,358.46 : x
  2. Step 2: Convert to fraction form
    15,768.47/21,768.93 = 12,358.46/x
  3. Step 3: Cross multiply
    15,768.47x = 21,768.93 × 12,358.46
  4. Step 4: Simplify right side
    15,768.47x = 269,030,341.80
  5. Step 5: Solve for x
    x = 269,030,341.80/15,768.47
  6. Step 6: Final answer
    x = 17,061.29

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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.