Home / 21,381.34-29,475.21-14,988.01

Finding the Fourth Proportional to 21,381.34, 29,475.21 and 14,988.01

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Solution

The fourth proportional to 21,381.34, 29,475.21 and 14,988.01 is: 20,661.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.34 : 29,475.21 = 14,988.01 : x
  2. Step 2: Convert to fraction form
    21,381.34/29,475.21 = 14,988.01/x
  3. Step 3: Cross multiply
    21,381.34x = 29,475.21 × 14,988.01
  4. Step 4: Simplify right side
    21,381.34x = 441,774,742.23
  5. Step 5: Solve for x
    x = 441,774,742.23/21,381.34
  6. Step 6: Final answer
    x = 20,661.70

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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.