Home / 21,313.02-29,430.54-13,368.90

Finding the Fourth Proportional to 21,313.02, 29,430.54 and 13,368.90

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Solution

The fourth proportional to 21,313.02, 29,430.54 and 13,368.90 is: 18,460.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.02 : 29,430.54 = 13,368.90 : x
  2. Step 2: Convert to fraction form
    21,313.02/29,430.54 = 13,368.90/x
  3. Step 3: Cross multiply
    21,313.02x = 29,430.54 × 13,368.90
  4. Step 4: Simplify right side
    21,313.02x = 393,453,946.21
  5. Step 5: Solve for x
    x = 393,453,946.21/21,313.02
  6. Step 6: Final answer
    x = 18,460.73

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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.