Home / 12,345.32-17,036.80-7,307.70

Finding the Fourth Proportional to 12,345.32, 17,036.80 and 7,307.70

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Solution

The fourth proportional to 12,345.32, 17,036.80 and 7,307.70 is: 10,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.32 : 17,036.80 = 7,307.70 : x
  2. Step 2: Convert to fraction form
    12,345.32/17,036.80 = 7,307.70/x
  3. Step 3: Cross multiply
    12,345.32x = 17,036.80 × 7,307.70
  4. Step 4: Simplify right side
    12,345.32x = 124,499,823.36
  5. Step 5: Solve for x
    x = 124,499,823.36/12,345.32
  6. Step 6: Final answer
    x = 10,084.78

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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.