Home / 21,515.04-29,700.48-14,445.36

Finding the Fourth Proportional to 21,515.04, 29,700.48 and 14,445.36

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Solution

The fourth proportional to 21,515.04, 29,700.48 and 14,445.36 is: 19,941.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.04 : 29,700.48 = 14,445.36 : x
  2. Step 2: Convert to fraction form
    21,515.04/29,700.48 = 14,445.36/x
  3. Step 3: Cross multiply
    21,515.04x = 29,700.48 × 14,445.36
  4. Step 4: Simplify right side
    21,515.04x = 429,034,125.77
  5. Step 5: Solve for x
    x = 429,034,125.77/21,515.04
  6. Step 6: Final answer
    x = 19,941.13

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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.