Home / 12,989,551.04-17,925,615.32-7,188,732.80

Finding the Fourth Proportional to 12,989,551.04, 17,925,615.32 and 7,188,732.80

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Solution

The fourth proportional to 12,989,551.04, 17,925,615.32 and 7,188,732.80 is: 9,920,470.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,551.04 : 17,925,615.32 = 7,188,732.80 : x
  2. Step 2: Convert to fraction form
    12,989,551.04/17,925,615.32 = 7,188,732.80/x
  3. Step 3: Cross multiply
    12,989,551.04x = 17,925,615.32 × 7,188,732.80
  4. Step 4: Simplify right side
    12,989,551.04x = 128,862,458,811,066.50
  5. Step 5: Solve for x
    x = 128,862,458,811,066.50/12,989,551.04
  6. Step 6: Final answer
    x = 9,920,470.57

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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.