Home / 13,720.48-18,933.42-7,752.40

Finding the Fourth Proportional to 13,720.48, 18,933.42 and 7,752.40

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Solution

The fourth proportional to 13,720.48, 18,933.42 and 7,752.40 is: 10,697.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.48 : 18,933.42 = 7,752.40 : x
  2. Step 2: Convert to fraction form
    13,720.48/18,933.42 = 7,752.40/x
  3. Step 3: Cross multiply
    13,720.48x = 18,933.42 × 7,752.40
  4. Step 4: Simplify right side
    13,720.48x = 146,779,445.21
  5. Step 5: Solve for x
    x = 146,779,445.21/13,720.48
  6. Step 6: Final answer
    x = 10,697.84

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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.