Home / 13,430.12-18,533.28-7,461.68

Finding the Fourth Proportional to 13,430.12, 18,533.28 and 7,461.68

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Solution

The fourth proportional to 13,430.12, 18,533.28 and 7,461.68 is: 10,296.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.12 : 18,533.28 = 7,461.68 : x
  2. Step 2: Convert to fraction form
    13,430.12/18,533.28 = 7,461.68/x
  3. Step 3: Cross multiply
    13,430.12x = 18,533.28 × 7,461.68
  4. Step 4: Simplify right side
    13,430.12x = 138,289,404.71
  5. Step 5: Solve for x
    x = 138,289,404.71/13,430.12
  6. Step 6: Final answer
    x = 10,296.96

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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.