Home / 15,848.47-21,870.30-8,775.01

Finding the Fourth Proportional to 15,848.47, 21,870.30 and 8,775.01

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Solution

The fourth proportional to 15,848.47, 21,870.30 and 8,775.01 is: 12,109.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,848.47 : 21,870.30 = 8,775.01 : x
  2. Step 2: Convert to fraction form
    15,848.47/21,870.30 = 8,775.01/x
  3. Step 3: Cross multiply
    15,848.47x = 21,870.30 × 8,775.01
  4. Step 4: Simplify right side
    15,848.47x = 191,912,101.20
  5. Step 5: Solve for x
    x = 191,912,101.20/15,848.47
  6. Step 6: Final answer
    x = 12,109.19

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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.