Home / 15,777.17-21,763.85-10,989.53

Finding the Fourth Proportional to 15,777.17, 21,763.85 and 10,989.53

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Solution

The fourth proportional to 15,777.17, 21,763.85 and 10,989.53 is: 15,159.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,777.17 : 21,763.85 = 10,989.53 : x
  2. Step 2: Convert to fraction form
    15,777.17/21,763.85 = 10,989.53/x
  3. Step 3: Cross multiply
    15,777.17x = 21,763.85 × 10,989.53
  4. Step 4: Simplify right side
    15,777.17x = 239,174,482.49
  5. Step 5: Solve for x
    x = 239,174,482.49/15,777.17
  6. Step 6: Final answer
    x = 15,159.53

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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.