Home / 21,830.02-30,117.48-12,393.12

Finding the Fourth Proportional to 21,830.02, 30,117.48 and 12,393.12

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Solution

The fourth proportional to 21,830.02, 30,117.48 and 12,393.12 is: 17,097.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,830.02 : 30,117.48 = 12,393.12 : x
  2. Step 2: Convert to fraction form
    21,830.02/30,117.48 = 12,393.12/x
  3. Step 3: Cross multiply
    21,830.02x = 30,117.48 × 12,393.12
  4. Step 4: Simplify right side
    21,830.02x = 373,249,543.74
  5. Step 5: Solve for x
    x = 373,249,543.74/21,830.02
  6. Step 6: Final answer
    x = 17,097.99

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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.