Home / 30,875.18-46,312.49-8,688.40

Finding the Fourth Proportional to 30,875.18, 46,312.49 and 8,688.40

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Solution

The fourth proportional to 30,875.18, 46,312.49 and 8,688.40 is: 13,032.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,875.18 : 46,312.49 = 8,688.40 : x
  2. Step 2: Convert to fraction form
    30,875.18/46,312.49 = 8,688.40/x
  3. Step 3: Cross multiply
    30,875.18x = 46,312.49 × 8,688.40
  4. Step 4: Simplify right side
    30,875.18x = 402,381,344.06
  5. Step 5: Solve for x
    x = 402,381,344.06/30,875.18
  6. Step 6: Final answer
    x = 13,032.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.