Home / 12,989,518.02-17,925,569.73-7,188,699.78

Finding the Fourth Proportional to 12,989,518.02, 17,925,569.73 and 7,188,699.78

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Solution

The fourth proportional to 12,989,518.02, 17,925,569.73 and 7,188,699.78 is: 9,920,424.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,518.02 : 17,925,569.73 = 7,188,699.78 : x
  2. Step 2: Convert to fraction form
    12,989,518.02/17,925,569.73 = 7,188,699.78/x
  3. Step 3: Cross multiply
    12,989,518.02x = 17,925,569.73 × 7,188,699.78
  4. Step 4: Simplify right side
    12,989,518.02x = 128,861,539,174,425.67
  5. Step 5: Solve for x
    x = 128,861,539,174,425.67/12,989,518.02
  6. Step 6: Final answer
    x = 9,920,424.99

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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.