Home / 21,368.40-29,477.64-14,295.12

Finding the Fourth Proportional to 21,368.40, 29,477.64 and 14,295.12

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Solution

The fourth proportional to 21,368.40, 29,477.64 and 14,295.12 is: 19,720.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.40 : 29,477.64 = 14,295.12 : x
  2. Step 2: Convert to fraction form
    21,368.40/29,477.64 = 14,295.12/x
  3. Step 3: Cross multiply
    21,368.40x = 29,477.64 × 14,295.12
  4. Step 4: Simplify right side
    21,368.40x = 421,386,401.12
  5. Step 5: Solve for x
    x = 421,386,401.12/21,368.40
  6. Step 6: Final answer
    x = 19,720.07

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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.