Home / 15,607.47-21,538.38-8,533.90

Finding the Fourth Proportional to 15,607.47, 21,538.38 and 8,533.90

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Solution

The fourth proportional to 15,607.47, 21,538.38 and 8,533.90 is: 11,776.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.47 : 21,538.38 = 8,533.90 : x
  2. Step 2: Convert to fraction form
    15,607.47/21,538.38 = 8,533.90/x
  3. Step 3: Cross multiply
    15,607.47x = 21,538.38 × 8,533.90
  4. Step 4: Simplify right side
    15,607.47x = 183,806,381.08
  5. Step 5: Solve for x
    x = 183,806,381.08/15,607.47
  6. Step 6: Final answer
    x = 11,776.82

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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.