Home / 10,389.76-14,337.68-5,674.48

Finding the Fourth Proportional to 10,389.76, 14,337.68 and 5,674.48

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Solution

The fourth proportional to 10,389.76, 14,337.68 and 5,674.48 is: 7,830.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.76 : 14,337.68 = 5,674.48 : x
  2. Step 2: Convert to fraction form
    10,389.76/14,337.68 = 5,674.48/x
  3. Step 3: Cross multiply
    10,389.76x = 14,337.68 × 5,674.48
  4. Step 4: Simplify right side
    10,389.76x = 81,358,878.41
  5. Step 5: Solve for x
    x = 81,358,878.41/10,389.76
  6. Step 6: Final answer
    x = 7,830.68

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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.