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Finding the Fourth Proportional to 13,307.79, 19,944.73 and 7,070.79

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Solution

The fourth proportional to 13,307.79, 19,944.73 and 7,070.79 is: 10,597.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.79 : 19,944.73 = 7,070.79 : x
  2. Step 2: Convert to fraction form
    13,307.79/19,944.73 = 7,070.79/x
  3. Step 3: Cross multiply
    13,307.79x = 19,944.73 × 7,070.79
  4. Step 4: Simplify right side
    13,307.79x = 141,025,081.07
  5. Step 5: Solve for x
    x = 141,025,081.07/13,307.79
  6. Step 6: Final answer
    x = 10,597.18

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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.