Home / 15,430.14-23,145.78-7,931.69

Finding the Fourth Proportional to 15,430.14, 23,145.78 and 7,931.69

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Solution

The fourth proportional to 15,430.14, 23,145.78 and 7,931.69 is: 11,897.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.14 : 23,145.78 = 7,931.69 : x
  2. Step 2: Convert to fraction form
    15,430.14/23,145.78 = 7,931.69/x
  3. Step 3: Cross multiply
    15,430.14x = 23,145.78 × 7,931.69
  4. Step 4: Simplify right side
    15,430.14x = 183,585,036.04
  5. Step 5: Solve for x
    x = 183,585,036.04/15,430.14
  6. Step 6: Final answer
    x = 11,897.82

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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.