Home / 15,430.40-23,145.60-5,043.20

Finding the Fourth Proportional to 15,430.40, 23,145.60 and 5,043.20

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Solution

The fourth proportional to 15,430.40, 23,145.60 and 5,043.20 is: 7,564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.40 : 23,145.60 = 5,043.20 : x
  2. Step 2: Convert to fraction form
    15,430.40/23,145.60 = 5,043.20/x
  3. Step 3: Cross multiply
    15,430.40x = 23,145.60 × 5,043.20
  4. Step 4: Simplify right side
    15,430.40x = 116,727,889.92
  5. Step 5: Solve for x
    x = 116,727,889.92/15,430.40
  6. Step 6: Final answer
    x = 7,564.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.