Home / 13,355.02-18,417.85-8,569.45

Finding the Fourth Proportional to 13,355.02, 18,417.85 and 8,569.45

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Solution

The fourth proportional to 13,355.02, 18,417.85 and 8,569.45 is: 11,818.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.02 : 18,417.85 = 8,569.45 : x
  2. Step 2: Convert to fraction form
    13,355.02/18,417.85 = 8,569.45/x
  3. Step 3: Cross multiply
    13,355.02x = 18,417.85 × 8,569.45
  4. Step 4: Simplify right side
    13,355.02x = 157,830,844.68
  5. Step 5: Solve for x
    x = 157,830,844.68/13,355.02
  6. Step 6: Final answer
    x = 11,818.09

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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.