Home / 13,657.02-18,848.08-8,355.36

Finding the Fourth Proportional to 13,657.02, 18,848.08 and 8,355.36

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Solution

The fourth proportional to 13,657.02, 18,848.08 and 8,355.36 is: 11,531.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.02 : 18,848.08 = 8,355.36 : x
  2. Step 2: Convert to fraction form
    13,657.02/18,848.08 = 8,355.36/x
  3. Step 3: Cross multiply
    13,657.02x = 18,848.08 × 8,355.36
  4. Step 4: Simplify right side
    13,657.02x = 157,482,493.71
  5. Step 5: Solve for x
    x = 157,482,493.71/13,657.02
  6. Step 6: Final answer
    x = 11,531.25

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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.