Home / 11,421.02-15,750.50-7,440.68

Finding the Fourth Proportional to 11,421.02, 15,750.50 and 7,440.68

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Solution

The fourth proportional to 11,421.02, 15,750.50 and 7,440.68 is: 10,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.02 : 15,750.50 = 7,440.68 : x
  2. Step 2: Convert to fraction form
    11,421.02/15,750.50 = 7,440.68/x
  3. Step 3: Cross multiply
    11,421.02x = 15,750.50 × 7,440.68
  4. Step 4: Simplify right side
    11,421.02x = 117,194,430.34
  5. Step 5: Solve for x
    x = 117,194,430.34/11,421.02
  6. Step 6: Final answer
    x = 10,261.29

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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.