Home / 15,503.84-21,393.36-10,478.99

Finding the Fourth Proportional to 15,503.84, 21,393.36 and 10,478.99

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Solution

The fourth proportional to 15,503.84, 21,393.36 and 10,478.99 is: 14,459.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,503.84 : 21,393.36 = 10,478.99 : x
  2. Step 2: Convert to fraction form
    15,503.84/21,393.36 = 10,478.99/x
  3. Step 3: Cross multiply
    15,503.84x = 21,393.36 × 10,478.99
  4. Step 4: Simplify right side
    15,503.84x = 224,180,805.51
  5. Step 5: Solve for x
    x = 224,180,805.51/15,503.84
  6. Step 6: Final answer
    x = 14,459.70

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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.