Home / 21,457.32-29,607.21-13,510.14

Finding the Fourth Proportional to 21,457.32, 29,607.21 and 13,510.14

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Solution

The fourth proportional to 21,457.32, 29,607.21 and 13,510.14 is: 18,641.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.32 : 29,607.21 = 13,510.14 : x
  2. Step 2: Convert to fraction form
    21,457.32/29,607.21 = 13,510.14/x
  3. Step 3: Cross multiply
    21,457.32x = 29,607.21 × 13,510.14
  4. Step 4: Simplify right side
    21,457.32x = 399,997,552.11
  5. Step 5: Solve for x
    x = 399,997,552.11/21,457.32
  6. Step 6: Final answer
    x = 18,641.54

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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.