Home / 15,420.18-23,139.54-6,655.10

Finding the Fourth Proportional to 15,420.18, 23,139.54 and 6,655.10

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Solution

The fourth proportional to 15,420.18, 23,139.54 and 6,655.10 is: 9,986.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.18 : 23,139.54 = 6,655.10 : x
  2. Step 2: Convert to fraction form
    15,420.18/23,139.54 = 6,655.10/x
  3. Step 3: Cross multiply
    15,420.18x = 23,139.54 × 6,655.10
  4. Step 4: Simplify right side
    15,420.18x = 153,995,836.96
  5. Step 5: Solve for x
    x = 153,995,836.96/15,420.18
  6. Step 6: Final answer
    x = 9,986.64

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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.