Home / 12,989,544.08-17,925,605.58-7,188,725.84

Finding the Fourth Proportional to 12,989,544.08, 17,925,605.58 and 7,188,725.84

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Solution

The fourth proportional to 12,989,544.08, 17,925,605.58 and 7,188,725.84 is: 9,920,460.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,544.08 : 17,925,605.58 = 7,188,725.84 : x
  2. Step 2: Convert to fraction form
    12,989,544.08/17,925,605.58 = 7,188,725.84/x
  3. Step 3: Cross multiply
    12,989,544.08x = 17,925,605.58 × 7,188,725.84
  4. Step 4: Simplify right side
    12,989,544.08x = 128,862,264,030,594.17
  5. Step 5: Solve for x
    x = 128,862,264,030,594.17/12,989,544.08
  6. Step 6: Final answer
    x = 9,920,460.89

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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.