Home / 15,621.04-21,557.01-8,547.49

Finding the Fourth Proportional to 15,621.04, 21,557.01 and 8,547.49

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Solution

The fourth proportional to 15,621.04, 21,557.01 and 8,547.49 is: 11,795.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.04 : 21,557.01 = 8,547.49 : x
  2. Step 2: Convert to fraction form
    15,621.04/21,557.01 = 8,547.49/x
  3. Step 3: Cross multiply
    15,621.04x = 21,557.01 × 8,547.49
  4. Step 4: Simplify right side
    15,621.04x = 184,258,327.40
  5. Step 5: Solve for x
    x = 184,258,327.40/15,621.04
  6. Step 6: Final answer
    x = 11,795.52

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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.