Home / 10,389.81-14,337.36-5,673.18

Finding the Fourth Proportional to 10,389.81, 14,337.36 and 5,673.18

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Solution

The fourth proportional to 10,389.81, 14,337.36 and 5,673.18 is: 7,828.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.81 : 14,337.36 = 5,673.18 : x
  2. Step 2: Convert to fraction form
    10,389.81/14,337.36 = 5,673.18/x
  3. Step 3: Cross multiply
    10,389.81x = 14,337.36 × 5,673.18
  4. Step 4: Simplify right side
    10,389.81x = 81,338,424.00
  5. Step 5: Solve for x
    x = 81,338,424.00/10,389.81
  6. Step 6: Final answer
    x = 7,828.67

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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.