Home / 15,709.60-21,678.60-10,036.36

Finding the Fourth Proportional to 15,709.60, 21,678.60 and 10,036.36

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Solution

The fourth proportional to 15,709.60, 21,678.60 and 10,036.36 is: 13,849.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.60 : 21,678.60 = 10,036.36 : x
  2. Step 2: Convert to fraction form
    15,709.60/21,678.60 = 10,036.36/x
  3. Step 3: Cross multiply
    15,709.60x = 21,678.60 × 10,036.36
  4. Step 4: Simplify right side
    15,709.60x = 217,574,233.90
  5. Step 5: Solve for x
    x = 217,574,233.90/15,709.60
  6. Step 6: Final answer
    x = 13,849.76

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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.