Home / 11,148.02-15,385.95-7,116.57

Finding the Fourth Proportional to 11,148.02, 15,385.95 and 7,116.57

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Solution

The fourth proportional to 11,148.02, 15,385.95 and 7,116.57 is: 9,821.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.02 : 15,385.95 = 7,116.57 : x
  2. Step 2: Convert to fraction form
    11,148.02/15,385.95 = 7,116.57/x
  3. Step 3: Cross multiply
    11,148.02x = 15,385.95 × 7,116.57
  4. Step 4: Simplify right side
    11,148.02x = 109,495,190.19
  5. Step 5: Solve for x
    x = 109,495,190.19/11,148.02
  6. Step 6: Final answer
    x = 9,821.95

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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.