Home / 14,157.28-19,537.60-9,690.40

Finding the Fourth Proportional to 14,157.28, 19,537.60 and 9,690.40

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Solution

The fourth proportional to 14,157.28, 19,537.60 and 9,690.40 is: 13,373.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,157.28 : 19,537.60 = 9,690.40 : x
  2. Step 2: Convert to fraction form
    14,157.28/19,537.60 = 9,690.40/x
  3. Step 3: Cross multiply
    14,157.28x = 19,537.60 × 9,690.40
  4. Step 4: Simplify right side
    14,157.28x = 189,327,159.04
  5. Step 5: Solve for x
    x = 189,327,159.04/14,157.28
  6. Step 6: Final answer
    x = 13,373.13

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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.