Home / 10,021.60-15,032.40-7,688.80

Finding the Fourth Proportional to 10,021.60, 15,032.40 and 7,688.80

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Solution

The fourth proportional to 10,021.60, 15,032.40 and 7,688.80 is: 11,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,021.60 : 15,032.40 = 7,688.80 : x
  2. Step 2: Convert to fraction form
    10,021.60/15,032.40 = 7,688.80/x
  3. Step 3: Cross multiply
    10,021.60x = 15,032.40 × 7,688.80
  4. Step 4: Simplify right side
    10,021.60x = 115,581,117.12
  5. Step 5: Solve for x
    x = 115,581,117.12/10,021.60
  6. Step 6: Final answer
    x = 11,533.20

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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.