Home / 13,638,367.90-18,827,085.52-8,994,907.63

Finding the Fourth Proportional to 13,638,367.90, 18,827,085.52 and 8,994,907.63

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Solution

The fourth proportional to 13,638,367.90, 18,827,085.52 and 8,994,907.63 is: 12,417,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638,367.90 : 18,827,085.52 = 8,994,907.63 : x
  2. Step 2: Convert to fraction form
    13,638,367.90/18,827,085.52 = 8,994,907.63/x
  3. Step 3: Cross multiply
    13,638,367.90x = 18,827,085.52 × 8,994,907.63
  4. Step 4: Simplify right side
    13,638,367.90x = 169,347,895,194,510.53
  5. Step 5: Solve for x
    x = 169,347,895,194,510.53/13,638,367.90
  6. Step 6: Final answer
    x = 12,417,020.60

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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.