Home / 21,320.84-29,422.95-12,368.50

Finding the Fourth Proportional to 21,320.84, 29,422.95 and 12,368.50

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Solution

The fourth proportional to 21,320.84, 29,422.95 and 12,368.50 is: 17,068.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.84 : 29,422.95 = 12,368.50 : x
  2. Step 2: Convert to fraction form
    21,320.84/29,422.95 = 12,368.50/x
  3. Step 3: Cross multiply
    21,320.84x = 29,422.95 × 12,368.50
  4. Step 4: Simplify right side
    21,320.84x = 363,917,637.14
  5. Step 5: Solve for x
    x = 363,917,637.14/21,320.84
  6. Step 6: Final answer
    x = 17,068.64

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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.